Hello I have a troy bilt 210 lawn mower and it hasn't ran in 3 years but I ran the gas out of it before I stored it and before I stored it it fell and the auto choke bracket came off and the spring got stretched,so I put it back on where I thought it went and now I'm trying to start it, I poured a little gas in the carb.and it would run until the gas was gone, any ideas on what to do ?