hey np when you break in an engien after like 500 miles i think it is you drain the fluids and put new oil in and top it off and also check teh valve lash heat makes things stretch and contract and after a few fire ups it doesnt stretch anymore so thats the reason from what ive heard atleast glad you got it figured out had to be something stupid like i thought with the timing if your down in my neck of the woods lets go wheeling!