Greg, there is no set rule for jetting, all bikes are different. You have to 'read the plugs'. Sounds like it's running lean. Look at the spark plugs, if snow white, go up a size at a time with the mid jet [only]. You want the plugs to have a light gray/light tan look. The opposit if it's running too rich, and the plugs have a black look. Powder black is fuel fouling, gloss black is oil fouled, you would go down a size at a time...
FX
Don't force it, get a bigger hammer.