I recommend heating the motor up first. This helps to keep the rod bushings from taking a beating with a tight piston/sleeve pinch on first few tanks. You can use after run oil through the glowplug hole or through the exhaust port if the pipe is off to make sure it is well lubed, but I prefer castor oil personally. And also blow through the pipe or the line to the tank to get fuel right at the carb so you don't spend a lot of time trying to get it started up. Hair drier may only make it to about 160deg which is OK. I prefer the heat gun and get it to 200deg instead though. What fuel are you running it in with. It should be a high oil content for breaking in.