You don't have stock carbs on there is your running 175 mains.....STock carb jets only go in 10 increments....180,190,200,210,220,230, etc....If you have 175 mains, then your running keihin carbs which are larger than stock which will make you lose hp w/o porting.....A 175 main is a huge jet for stock motor w/ just pipes..I'm running a 158 w/ my stroker...
Mikuni actually go in increments of 5 from 50-200 then from 200-500 they go up in 10's