How have those of you who have replaced or upgraded camshafts gone about break in? Reading the cam card that came with my GSC power division cams it says NOT to use synthetic oil for the break in because of the properties of ductile steel billet blah blah blah. So I've already started the vehicle with said cams installed...with an oil pan full of Mobil1. I am wondering if I may have already compromised the new camshafts and if I should even bother draining the synthetic oil and going through the motions with conventional oil...running it through two heat cycles and then replacing the oil. Any insight would be appreciated. Thanks.