Not really, I had the heads of and replaced the head gaskets but nothing else that would have any impact on this. I've been playing with the timing ever since getting the car but now it's at around 18 degrees initial. I've had som issues with the vaccum advance as I'm only getting about 10hg of vaccum at idle due to the "choppy" cam. I've tried to adjust the membrane but that doesn't seem to help and I'm quite sure it doesn't do anything at idle. I actually have the vaccum advance plugged right now as that seems to be what it likes best, runs great that way (when warm). Still gets about 35-40 degrees of timing at around 3500 rpms. The uncertainty around my vaccum advance setup is why I'm considering changing my ignition setup, I just don't feel confident with the current setup (which I didn't put in the car).