Tracks all seem to do their own thing.. Heres a few I am aware of
** Tachometer check ONLY and allow claiming to take over
** Tachometer and a lil visual tech as for head gasket, muffler and air box
** Tachometer, remove carburetor, muffler,,air box and check ignition timing
** Some tracks when running for a substantial amount $$ with tear down the engine and check multiple things
If you are running these engines over 5000 rpm's with gov,,stk muffler and filter than you have something done or you have a 1 in 100 engine