the only reason I can think of to advance a cam something like 10 degrees is if it has retard ground into it. there are some factory smog cams that have retard ground into them. the stage 2 wedge cam is recommended to be advanced 8 degrees but for some reason, and I could be wrong, I think they may have a couple of degrees retard ground into them. I've noticed that some older profiles (and it seems like lobes with longer closing ramps) may have 5 degrees ground into them. I have advanced cams with 108lsa a couple of degrees but that still ended up being 4 degrees total and I wouldn't go any further.