I'm trying to get my 72 Honda SL125 to start. It hasn't run since I bought it. I changed the battery and points and now I've got a nice strong blue spark. It had low compression so I changed the piston, rings and cylinder and had the head resurfaced and lapped the valves. gas wasn't flowing into the carburetor so i sprayed carb cleaner down the fuel inlet until some gunk came out. Now fuel is flowing into the carb. After trying to kick start it a couple times it kicked back and almost sprained my ankle. now I'm wearing boots but it still isn't starting. If kick it slow, sometimes it makes a pop and smoke comes out the exhaust. Getting this bike to run has been much more difficult that I expected but I feel like I might be getting close. I'm not sure what I should try next. Any suggestions?