I read the "Heat Soak" post again and looked at the pics on page 5. I adjusted the other roller on top of my carbs to where it is contacting the cam (can't see many pics on my work computer). I didn't bother with the screw and the top roller. That is why I, I guess, I had to adjust with the throttle linkage as opposed to the screw and arm on top. Looking at it work, it seems to have the same result as far as the advance is concerned. If this post makes any sense whatsoever to anyone other than me, please give me a little insight. I haven't gotten to run it yet, except on the hosepipe...maybe I can this afternoon.