Hi, I was running my car just a little while ago and it was running fine but after maybe 2 tanks it started having problems holding an idle and it was going considerably slower then it was. I had to keep riching the mixture too, that is normal to a point but I was at 4 1/2 turns out, which the recommended was 3. And there still wasn't that much smoke coming out. After the 3rd or 4th tank it started going very slow, it took about 5 or 6 seconds to get into second gear opposed to maybe 1-2 seconds. Could this be because the engine is getting too hot? I have only run the engine though 1/2 gallon and I have taken great care of the engine. Clean fuel/air filter, never run too lean, etc. So I don't think its the piston and sleeve. The engine I have is the HPI 12R SS I got with my SS kit.

Thanks for any help,
Kyle.