Who was our "Appliance Maven"? I can't remember... was it Mel?
Anyway, you can take all the parts of the agitator apart and clean that, especially where the liquid softener goes in if you have one of those (and you should) because stuff gets stuck down in there. Use one of those long grabby things like you reach down inside pipes with if you drop your ring... you know? It's HORRID what you'll get out!!!
After you do that, then flush everything with vinegar and hot water and run through a complete cycle. Then another cycle to rinse everything.
Otherwise, all you should have to do is periodically run your machine with a hot water and bleach cycle by itself to keep it clean!
