So Stroking, who are all of these people that are sending you their bikes to work on? You obviously have no idea what the hell you are doing and clearly you can't read. You have zero credibility and should give it a rest. I am guessing you are the one who tuned these bikes and are looking to blame anything but yourself for your lack of skills. Sure the wang cranks are junk but I can only imagine how that may have been mostly your fault. So I must say Mr. Stroking, perhaps you should let a pro install and tune your shit.