HI guys this is my first post on thumper talk but I use the site alot for all the info and always found it useful. Anyways I just bought a used 2003 DRZ 125 yesterday for my girlfriend to ride. Im used to working and riding 2 strokes since I ride a Cr 250. Well I couldnt resist the buy because I got the guy to sell it to me for $180. It needs a new muffler, rear wheel bearings and tires soon tho. I got it cheap because it wouldnt start when I went to buy it.The guy said it has been sitting for 6 months. Well today I went and removed the gas tank removed all of the old gas then cleaned the carb. This carb was by far the dirtiest I have ever seen. I had to use a wire brush on a dremel and a whole can of carb spray. I removed all the jets and cleaned them and the ports then blew with compressed air. Once I put the bike back together the bike would fire over with then die instantly. With starting fluid sprayed on the air filter it fired up on choke then would run if I kept on the throttle back and forth. I let it die then tried to start and it only would if the choke was on. Anyways I want to know does this have anything to do with me not having a muffler on it at all ( waiting on one from ebay)? My guess is the previous owner messed with the adjustments thinking it needed it even tho the carb was gunked up. How do I go about fixing the adjustments? Seems like its running lean on gas?