Picked up a KLR off craigslist a few weeks ago in pretty rough shape, however the owner said It had run fine about a year ago and had just been sitting. I rebuilt the carb using an all balls kit and put in a new battery, spark plug and fresh gas to see if it it'll start. No luck. It seems like its getting gas from the tank as I see gas in the fuel filter. It could potentially be the air fuel screw, as I forgot to note where it was positioned I started rebuilding. Any advice as to what/how I can trouble shoot would be greatly appreciated.