Hello all; I have a 2000 xr650l that is completely stock. I just took off the snorkel and man, does that really let the beast breath. The front end is ready to come up easier, the exhaust has a deep throat sound (completely stock), faster acceleration, and all around more power, but the thing is a bit finicky. The thing will surge and hesitate a little. I still need to take the carburetor out and clean it up, but is there anything else that I should look at? What will happen if I also desmog the beast? Will I have to do any other adjustments? I don't want to rejet it or put on an aftermarket exhaust, but am considering a Uni or K&N airfilter for it. Which one is better; Uni, stock, or K&N?