Washer stop rinsing tumble turns but not fast enough

could be a failing start run capacitor for the motor or a problem in the controller board as some washers spin slow while introducing water into the tub or initially on the rinse cycle
have a technician check it out

In the rinse cycle it will use cold only to rinse with.
You need to see how fast the water is going into the machine on rinse
Things that can effect slow fill, low water pressure, Faulty cold valve
water hose & valve filters clogged, Kinked hose

You may be experiencing a condition known as "siphoning". This is caused by the drain hose not being high enough off the floor, or not having a proper air gap at the standpipe in order to drain properly. This creates a suction and the washer will constantly drain as it tries to fill. The following link explains:

http://www.fixya.com/support/r3575830-how_to_prevent_washer_siphoning

In the majority of the cases, this problem is attributed to improper installation, rather than an actual problem with the washer. If you have any questions, please post back and let me know. I hope this helps you.

Sounds as if the drain pump is not ejecting the water fast enough. Did you notice of the washer is draining more slowly than usual or at all?

If the machine has a soak cycle, you can use that. If it does not, you can have it fill on a cold rinse, and then stop it for a soak. Restart it on a hot wash with a cold rinse. Tumble dry low.

When the washer initially fills for the wash, is it only hot water entering the drum? Try switching the water temperature between hot and cold as it fills. If any of them show little or no water getting through, it sounds too easy but check to make sure water supply taps are on, and that the cold/hot fill hoses aren't reversed. Remove the fill hoses and check any of the screen filters for blockage (in the hoses and in the inlet water valve). When the machine stops and waits to fill but all you hear is a hum, it sounds like there is power going to the valve but water is not able to get through it.
Good luck!

I called in an electrician/plumber - thanks !

because of the grinding noise your talking about it sounds like the motor bearings are bad which would require motor replacement. but, thats normally not what cause the " not completly turning problem" your having. general thats cause be the motor speed control not sending the proper power to the motor. remove the belt and turn the motor by itself to see if the noise is really come from the motor and not the back of the tub. if it is the motor, replace the motor. if it coming from the back of the tub the replace the motor speed control. the noise coming from the back of the tub would just be the ball bearings and they do make some noise on this model but you wont hear it when the washer is running

I sounds like it needs a new timer.

IT IS USUALLY THE "BELT TENSION ADJUSTABLE PULLEY". MOST ARE CHEAPLY MADE ... TRY A BIT OF AXLE GREESE ON IT ... IT IS SEALED FROM THE INNER DRUM AND IS MOUNTED USUALLY ON THE BOTTOM FRAME RAILING.