Re-jet for sure, you are running lean now to be sure , as I have said before, a lean engine will run like a scalded ape until the damage is done. If you still have the stock air box it won't be as lean as if you had pods or a modified air box but it will still be lean. Get Dinquas jetting calculator and use that for a starting point (tends to be rich from what I have seen but not by much) I would go to a 45 pilot and then what ever main you need for your set up.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!