GE washer agitator has froze up 2 times at start of spin cycle. I have lost my smell, but wife has said she smells something burning at the time. I pulled the agitator off each time, put back on and it spins again. Washer agitator coupler looks okay, not sure if the ridge splines on it are worn to a point that can cause lock up, or if I have a clutch problem? Thought about taking the clutch off just for a look, but thought I would ask first. Ty