I'm trying to get some idea of when the KK switched from the big valve setup to the small valve one. I am hoping that you KK owners or previous owners might be able to shed some light on this subject. The parts books simply say early KK for the big valves and later KK for the smaller ones. Would like to figure out at about what motor number they made the change. My KK is a later production bike with serial number 2650 and is a small valve. If any of you guys know for sure what valves are in your KK and would be willing to post your serial number or at least the first three digits if you don't want to give the whole thing that would be great. Or if anyone has any documentation on this matter that would be way over the top great. Thanks in advance for any input.
Stan