Ignition Trobuleshooting

I didn't do much of anything this afternoon except turn the key and the motor fired up pretty easily. It seems to idle pretty high so I backed off the idle screw on the carb and retarded the timing a bit. It restarted pretty good when it was hot too, but only with the timing advanced a bit.

Found out that the intake didn't seal well as I have coolant leaks, so now I have to pull it and change the gaskets out, this might be contributing to the problem, maybe fouling the plugs.