Flip that clutch before you spend a dime. All of a 2-stroke's power is in the high end. You may have noticed that all your friends dust you whenever you turn a corner. That's because you're stuck in 2nd gear going 10MPH on a 2HP ped and you weigh 240lbs (well, _I_ weigh 240lbs). Get that bitch flipped, and you'll be upshifting at 25MPH instead of 15, and downshifting at 20MPH instead of 7.
While, you're in there, definitely replace the shift dampener pucks. I know I said not to spend a dime, but that 20 bones means you don't destroy your engine. This also means buying an impact driver if you don't have one, but it's a must.