Hey I have some problems I wanna go over on my atv. I know this is a dirt bike forum but you guys know a lot and are a huge help, and there's not much of a difference between atvs and dirt bikes. Anyways, I just bought this 2004 Suzuki LT-Z250 quadsport. Ton of fun to ride! When I bought it, the guy before me took the muffler off and cut the tip off, then took all the insulation and everything out of it and welded the tip back... the quad wouldn't idle anymore because of that. So I bought a new oem muffler and replaced it. I took the carb off and inspected it, super clean. I changed the oil and oil filter. I cleaned the air filter. I installed a new spark plug. Here's the problems I'm having: I got it to idle, however when it's in neutral and I give it throttle, it kind of hangs a bit in the lower rpms and the quad shakes and rattles. When I put it in first or anything, it idles normal and runs smooth. Next problem: the engine is heating up too quickly? I'm not sure if this is normal or not but the engine gets real hot real fast. I can feel it radiating hot onto my legs just a couple minutes of idling. Last problem: it pops a lot on deceleration. When I let off the throttle it'll start popping.