Hello Gazimoto:

When I say stuck, I mean unmovable!!! I doubt that my drill press would provide enough push to be able to move the cp. I will try to do it with a drill press later.

Once the cp gets past the ports, it will not go any farther. One could beat on it with a wooden dowel and a large hammer but what is the point? The cp has to be free enough to be moved by the compression adjusting screw or the combustion pressure. There is no way that these cp will move in the cylinders without being lapped.

In the past, I have heard of people lapping the cp to the cylinder via a lapping paste. I may try this as my mate has some 1600 grit diamond material that may work well. I do know tht one can got undersize very quickly on a cp! Lol

When I received these parts, the cp were installed in some of the cylinders. I heated them to 300F and then drove them apart with the addition of a good oil. I was afraid the the cp would break,but none of them did. Even this primitive method took many blows with a large hammer and a wooden dowel.to free the parts

Stay well my friend,

Franchi