I dono if this guy would tolerate anything more complicated than a bing carb..
Drilling it out was a bad move... go look around at the reading material in the wiki...
What jet you need will depend on the size of your carb, and what HP it was labled to have.
If it's got a 14mm carb, probably get jets 58, 60, 62, 64, and 66. E-mail treatshq, he has them.
If it has a 12, probably do 54, 56, 58, 60, 62.
Might be excessive, but all I personally know is that on a puch badged 2hp, with a 14mm carb, at a mile high, you need a 62 or 64 jet, depending on weather conditions/how much your bike sucks.
Really though, go read up on this, if you don't figure this crap out soon you'll just end up asking more newbie questions and getting annoyed when everyone yells at you.