Thanks for the inputs. I had thought about the
locking lever idea, having seen it on other diesels.
I'm new to the diesel scene and feeling my way
around still. I seem to remember reading some-
where that it was possible for the contra piston
to move up and down with the regular piston if
it was loose enough. I know there is some slight
leakage around the contra as I can see oily
residue around the compression screw after 3 0r
4 runs. Don't know if this should be of concern or
not. I don't think vibration is a problem. Prop is
balanced as well as I can do it on magnetic balancer.
I may call Carlson next week and see if I can get
another contra piston to try. Hate to disassemble
this engine because it is really user friendly. A plus
for a beginner diesel man such as I.
Ken