Total Timing?

Old thread,but I find it interesting.
GTS Registry runs his car at 15 initial- 36 total. Doing the math,he has 21deg built into the distributor.36-15=21
But when he goes to the track he likes to run his car at 20 initial.
20+21=41deg total. Holy Kaboom Batman !
Rob (crackedback) You must have been pulling your hair out with this one. :D