Thanks Jamie for all the support this past weekend at the 2008 Capital Classic!!!
Once I fixed the problem I created on the R3 (stripped head button), the motor worked flawlessly. Several of the top drivers from the different manufacturers commented very favorably on the power that my car had.
To top it off, the motor didn't run higher than 270F on Saturday and Sunday where the air temps were around 95F and most motors were operating at 300F+. It made at least 5:10 runtime all weekend with 25% nitro content Maxy's Fuel and 0.5mm head shimming, including the fourth qualifier where I ran 55mm/57mm tires. The new head button had a nice brown burn color to it at the end of Sunday with absolutely no pitting.
For those that don't know about the R3, I have to quote the Washington Post...
If you don't get, you don't get it.