Thanks Mark. I'll look into those.
Cylinders are off, so no cleaning pistons in the bores. I did notice while cleaning out the holes in the case where the push rod seals go some clear, stretchy O's... I would guess it was sealant, except they were such perfect bands (think thin, clear, circular rubber bands). I'll take some picks and post. Is there anything that goes on the push rod seals that would do this??