The aux. seliniod is a helpful tip but is not a cure all. It probably would not solve the problem. Gazim needs to start with a HD starter in good condition. If the problem persists the engine could be getting tight when hot. Recintly rebuilt engines can get hard to turn when hot if the pistons are fitted too tight. An older engine with carbon buildup also can do this. Another thing to look at is battery capacity. You need about 625 CCA or more.
