I finally split my cases yesterday and upon pulling the oil pump out it started dropping pieces of a broken pin and other metal chunks from the opening. Also, the star shaped rotor had grooves cut between it and the area it rests against. I have not yet dissasembled the oil pump assembly itself, but I'm sure the culprit to my scarred cylinder is in there. The pickup screen is clean as can be, as was my oil filter after the cylinder damage occured. The pieces that caused the damage must be from inside the pump, right? Where does the oil pump deliver oil to... how did it get to my cylinder without damaging anything else along the way? Also, second gear has some wear on the inside where it meshes with 4th. I never had any shifting problems in the past, but I got a feeling they're coming if I reuse these gears. Are there any more problematic gears I should replace while I'm in there? The shift cam looks good, but the one fork I took out has some wear in it. I am going to replace the forks, but do you think its necessary to replace the shift cam too? Thanks.