If the cam is new you can contact Comp Cams and tell them you need to exchange it for a small base circle cam and they will send you another with a return shipping label so long as the cam has not been used. I explained to them that I had installed it and the rods would not clear the cam and they told me "No Problem". Very good customer service. Another time in a state if incoherentness, I had a bit of a problem with clearance and mistakenly aligned the wrong set of timing marks.