Hi Jeff,
I have only played with 2 of these with PT's on them and I'm not impressed, the F/C ones are far better, none of the problems that the PT's have given me. The PT's have given me starting problems, I have tried 3 different motors on the yellow one and it is still problematic. The ones I seem to have most success with are the early full cranks that were fitted with the G3 carb and once I fit an LM to them they are great