I can see how its fair that piston shooters can win a GP and piston class. Perhaps piston shooters might like it to be a class on its own is that something that they could ask the BFTA to disscuss. It would mean that they couldn't win a GP.
I'm not a piston shooter so perhaps I should shut up and leave things to the guys it effects. Would there have to a benefit to ask for it to be changed?