well as the title says i need some confirmation on my jetting. this is my first 2stroke so bear with me if this stuff is actually normal. so anyways i got my bike a week ago and it needed new oil seals on the crank. i put those in today and took it for a run. what i found was that it was like riding a 40+ horsepower light switch (literally)... it would sputter and bog a bit and also blow a lot of smoke in the lows, start to clear up in the mids, and hit like a ton of bricks, and run really good near the top. its very close if not spot on to the jetting recommended in the manual for altitude (about 4500-5000) and temperature (about 55-75) and im running 32-1 mix. the bike has a pro circuit works pipe with an r304 shorty silencer. would this make a huge difference in the jetting?i know it needs more air in the low rpm. i was thinking to open up the air screw a bit. is this the correct move to make? or should i change the clip position on the needle? also the silencer can has a major leak on the seam where it comes apart to get at the packing and its spitting oil all over my swingarm, rear tire, wheel, brake disc, brake caliper, and the inside of my side panel. i found that the o-ring or sealer stuff is gone on the bottom, how can i remedy this so it wont spit oil everywhere? short of using duck tape that is? thanks a ton guys!!!