I bought mine used from Bikecop and I have about 1200 miles on it and I think he said he put 2000 miles on it. No issues at all and it hauls the mail! No slip, no abnormal belt wear, no drivability changes until you lay into it, then hold the heck on. First thing in the morning, when I haven't had coffee and still groggy, with the engine still cold, I pull out of my neighborhood and hit it hard and it literally gives me virtigo/tunnel vision.

Oh, the one I have is also a Version 1 with notched grooves in the pulley like the stock pulley, I understand that the grooves on the newer ones are not notched out