There is a dynomax jet kit for 1988-2000 yamaha blaster on ebay going for 5 bucks.
88-05 yamaha blaster jet kit - eBay (item 170567842577 end time Nov-24-10 16:52:53 PST)
I didn't put any oil in at all.... i just bought it a week ago and this is my second time riding it. if i have time this weekend ill drain the oil and put new stuff in and the correct amount.
I rode my blaster today for about 15 minutes then i smelled oil burning, so i stop to check and i see oil pouring out of the breather hose. Can this happen because of too much oil in the crank case?