I too was burned by my exhaust tip. I took it off. Hasn't been a problem since.
I also started thinking the the "T" pipe connecting the two mufflers might be a point of restriction. I cut away the "T" leaving a 2/3 cylinder connecting the two muffler pipes. Pointed the opening facing down. The car is now quieter at partial throttle but much louder at full throttle.

-Paul Ho