hey all, ok the machine is old....~10 yrs. havent moved it out for a model # yet. the agitator doesnt really "grind" back and forth like it should, and rotate the cloths. just kind of seems loose. BUT if i apply a little pressure with my thumb on the top of the agitator, it begins to twist back and forth like it should. any ideas on where i should start before i wing it? ...... or is this a common problem with easy fix? seems like it should be a simple fix, but I'm clueless as to what i'm lookng for.