Ray,

I have one that I'd like to know if it is worth resizing or not. (I can send pics if that helps.)

I picked up a used C6BB, supposedly with 1.5- 2 gallons on it since new. I can tell it has been apart... (screw slots on the backplate show some deformation, etc) so I'm skeptical to say the least.

Looking in the exhaust port I can see some scoring from the wristpin to the top of the piston... and I can turn it over by hand without a flywheel installed. I haven't yet pulled it apart but will do so... gonna take pics of everthing first.

I realize that a resizing will tighten it back up... but should I be concerned about the scratches? Should I simply send it in and let you evaluate if it is useable?

IF it is useable I think I'll change the bearings before I put it back together... and I should check the pin on the crank for consistant diameter right? Are the regular digital calipers that most racers have adequately accurate for that?