I just replaced factory airbox with a Uni filter. I know I need to jet bigger, just don't know how much and would like to get close to start with rather then buying a bag of jets. Oregon - sea level, all stock right now. I know I need to go up at least 2 probably as I had to duck tape nearly the entire uni filter to make it run right and get good plug ready. Didn't realize how the darn air filter would make ...then again it shouldn't be suprising considering the stock engine breaths thru little 1" snorkel. 85? 87.5? assuming the Mikuni jets run in 2.5 increments with stock being 82.5?