I have just recieved my Bi Turbo Muffler, 27 tooth sprocket and a #56 jet today. I installed the jet no problem along with the turbo muffler. I am having trouble installing the sprocket. I have taken the motor completely off the moped to realize I cant get to the sprocket that way. Maybe on the left side were an allen wrench will fit is the place to take apart? I had trouble tightening the 10mm nuts on the studs for the exhaust. There is hardly any room to turn a wrench. I tightened it as tight as I could get it. I started the Tomos LX ('98) up and it was so damn loud. I started it up at 10:15pm in my condos garage. I saw the oil smoke puffing out the back. Is it possible that the nuts might not be tight enough? I started it up outside and wanted to cruise around but was way too loud and didnt want to piss off the neighbors. Please someone help me out on this. I had to purchase a metric wrench set because of this. Luckily Kmart was open. Have I just stumbled into something that is more annoying than Imported cars with LOUD mufflers?