I have a used A200 mixer and I noticed after it sat for a few weeks that it collected a yellow grease on the outside of the planetary housing on the little ledge above the agitator shaft. Thus it wouldn't seem to be leaking from the agitator shaft oil seal but maybe a transmission oil seal and eventually leaking over the side of planetary hub. I haven't removed the agitator, yet, but how would I replace a transmission oil seal if it's necessary? I have a parts catalog w/ breakdown already. Thanks for any help.

Food Mixers - Hobart - A200 Stand Mixer