The best cam on the market at the moment for a cvh is a newman, i'm on my 3rd kent cam in 15 months - cvh34 = 500miles - cvh35 = 100ish miles and current cvh36 = 2000 miles and going strong when i contacted kent they were deeply apologetic and they offered full refunds, but as i have said at the top the newman shaft is the best and runs solid lifters.