Hi Christopher,
I found that areas to be taped are generally any part that will be in contact by another in the normal operation of the unit - such as the shafts, especially where the woodruff keys sit and where a shaft is inserted into a bearing or sprocket. The part of the shaft where the thrust pad moves along will never hold paint. It is easy enough to get off with thinners etc but its just more work.
Cheers,
TC.
