Does the GBC Ultima 65 have an adjustable pot to increase heat of rollers? If so, where is it located?

you may try using tweezzer or use compressed air to dislodge it

Check the orange rollers for damage. If they aren't smooth all the way around then that could be causing your problem. If the air gaps are on edges of the laminate, a tension adjustment or film could be the problem as well.

Most likely cause is from the heat rollers having deposits of sticky junk on them. i found a video on cleaning them and will be below.

GBC Ultima 65 Care and Maintenance 1710740

I'd try listing this question under Office equipment, as this category is only for sewing machines.

sounds like the yellow and the orange wire connectors on the main board from the transformer are reversed. If not, then your main board needs replaced. I have them available, 405-324-6092, Scott,
Westco Laminating service

either the top heater tube, (inside the orange/red roller) is burned out (Open) or the wire on either side of the heater tube is burned or broken in half. It\'s not as bad as you might think.

westco laminating services....405-324-6092

go to youtube and watch the video on GBC ultima65 film loading. sounds like you are not using a threading card to load laminator. Manila File folders work great to load laminators Westco Laminating Svcs 405-324-6092

Could have a bad heat lamp, do your adhesive feel tacky on any of the rollers? Are you may have a bad triac

By "upper tension" do you mean the hex screw located inside the left panel? If you tighten this until there is no space between the heat rollers it should eleminate the problem. If it is continues to loosen, back the screw out, apply a small amount of locktight to the threads before replacing the screw.You can find locktight at any hardware store usually in the Paint section near the glues. Hope this helps. Good luck