Trying to rebuild my 1100cd with a donor case/crank assembly (also an 1100CD but newer). Because i am having trouble finding parts for an 1100 I decided just to swap everything over to the donor case. Upon installing the piston and cylinder i found that the piston skirt appears to hit the counterweight just before BDC. Same deal with the piston that came off the donor case (weird). Im going to take the C & P off again and make some measurements but is it possible that different years of the 1100 had different stroke lengths? Trying to determine if i need a different piston or if i need to break out the Dremel.