ok if I understood.
- Rule is simple get a screw in device to plug in cylinder "1"..measure intital piston level/as it hits the plug..mark it on the hopefully NEW damper..then turn it either forward or backward..(backward has the issue that the main big bold get loose, backward you need to have the piston beyond the top level- in forward direction).
- mark both points. THE MIDDLE is what you want "0"..mark it..adjust the "stock marker".. by just benting up or down, def mark it on the balancer.
Then mark the new "0" mark on the flyweel as there is as you said a mark at the gear box houesing..my box has it..new timing devices can do Degreeing up or down by just like that ref point.
Matthias..just doing it right now.