Lol i know a bit about drilling out jets. i converted a yz 125 to methanol years ago and with the 4:1 ratio it was a nightmare getting enough fuel throuh that thing. The power was incredible though id love to make this setup a turbo/methanol setup!!
I would also like to play around with nitromethane or nitropropane someday. I bought a 500 gallon drum of oxygenated 113 octane race fuel for watercross one year. you had to jet up an average of 2 sizes and it was a decent gain. it was noticeable seat of the pants.
edit: i just wanted to add im nowhere near 20psi that was just for the scenario i explained.