TT 40 Pro rules
At my very first 424 contest, it was obvious that my engine was WAY down on rpm compared with the rest of the pack. Since then I have done only the obvious LEGAL things to improve engine performance, i.e., shims, plugs, back out the idle needle, de-burr the baffle, etc. in preparation for a contest next month. However, after getting out both my micrometer and the rulebook, I find that the rules state that the maximum carburetor inlet diameter is 0.325" and the maximum muffler outlet diameter is equivalent to a 9/32" round hole (.0621 sq.in.). The carb inlet and the muffler outlet of the TT 40 Pro, AS DELIVERED, are both significantly smaller than that.
Since bringing the inlet and outlet up to their maximum rulebook diameters would involve removing metal, the question is:
Is it, or is it not legal to drill/machine the carburetor inlet and the muffler outlet to the maximum diameters clearly spelled out in the rulebook? If it is legal and I am not doing it, then I am a fool for giving up engine performance. On the other hand, I do not want to make illegal modifications to this "stock" engine class, because if you win by cheating you are not a winner, only a cheater.
Opinions? OFFICIAL opinions?