It does not seem to hold the correct amount oil when I attempt to fill the pump, so I suspect the lower gasket. That and I get an oscillating idle on cold start up, maybe pneumatic govenor o-rings?

Either way when the time comes to pull this off I would like to have all the parts to be able to address anything it needs. I have seen the Ebay ones but non are definitive to work on my pump.

I have some local German auto repair shops that I will call and see if they have a source.

thank you for the reply