Seems to be too much gap between pressure foot and tension plate .. material is held loosely

Good Day

This question is a bit vague and can have many reasons however basic checks you can do is first make sure there is thread on the bobbin under the pressure foot plate. Second re-thread the cotton to make sure it is threaded correctly from the cotton real right through to the needle, this often causes the stitches to behave erratically. Third if the bobbin has cotton on it, make sure the bobbin is seated correctly in its housing under the pressure foot plate. Fourth make sure that the tension in the pressure foot of the sewing machine is set at the correct pressure for the material being used.
Hope it is one of these that can be the cause.

Kind Regards

Be sure presser foot (embroidery foot) is fully lowered or tension discs will not fully mate. There should be notable difference in tension with foot up verses foot down as you pull on top thread?

Tighten the top tension. However, if the bobbin thread is actually pulling up on the top of the fabric, the bobbin tension is too loose. Both top and bobbin threads should pull enough against each other that they meet in the middle of the fabric without causing puckering.

Another thing to remember. ALWAYS RAISE the presser foot when threading the top thread!

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1. It most likely is the foot pressure not set properly. With thick material it needs to be less and with thin material it is opposite. Just test a piece of like fabric that is rags.
2. Make sure that you clean out any thread under the plate as good as you can.
3. Check your tensions. The top should be around four. The bobbin tension has to be even with the top tension. (like tug of war) However, when you thread the top do it with the foot up to check for snags. Snags are a serious problem and cause the material from moving. Good Luck.

Tension generally does not affect the feed unless it is way too tight. Most reasons for fabric not advancing under the presser foot is that the feed dogs have been dropped for darning. If the feed dogs are operating properly, as the handwheel turns the feed dogs should rise above the plate, move toward the back of the machine pulling the fabric, drop down, come forward and rise again.

The other possibility is that the presser foot pressure has been released so the presser foot is not holding the fabric down on the feed dogs. Some machines have a spring-loaded knob on the top of the machine, a dial, or something to adjust the amount of pressure the foot applies. Consult your owner's manual.

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Your top tension is based on the fabric thickness.. not just a number. Make a test sandwich of all the materials you are quilting with, cotton top, batting, lining, etc. Test your tension on that until you get it right.

The skipping is a symptom of a bad needle or the presser foot not having enough pressure on it. I'm not familiar with your machine so I don't know if it has the ability to add more pressure to the presser foot.

no, more likely your top tension is too loose causing the loops on the underside of your fabric, loops on top would be bobbin too loose. raise presser foot and rethread top thdead pulling thread into tension fully. set top tension dial to 5 and test sew. if still looping underneath try tightening top tension by turning dial up to 6. but usually top tension should only need minor adjustment tweeks. you can test top tension by lowering pressure foot to engage tension and holding thread just above needle thread guide, pulling thread downwards . there should be resistence on it to your pull. if you cant feel any then tension device may be faulty, and require service.

I don't think you can adjust the feed pressure on this machine. I have the same machine and the same problem and my solution is the same as you've already mentioned - raise the foot and move the fabric by hand. I would do it by turning the wheel by hand until the seam is clear of the foot to prevent breaking a needle or sewing my fingers.

check tension by putting pressure foot down and seeing if your getting tension from thread...(lower and upper)

By saying the tension of the foot is good I take it you mean the pressure is set good. Maybe add more pressure. Are you sure that the lever on the bottom right is set for sewing and not darning which raises the needle plate above the feeddogs? Sure that your feed dogs are moving well at the stitch length set. With slippery fabrics you may need to try a different type of foot. There are some plastic or teflon coated ones that will not stick to or hold the material back. Or try a Walking Foot or Even Feed foot which will move the top of the fabric evenly with the bottom.
They do help alot.
Good luck