yeah point taken with pressures when your starting out, as im just gettin back into trials after a few years out im guna be rusty as hell, and even at my best im only average, 30psi ish is probably guna be a good place to start and work from there. Also guna run dual ply tyre on the rear which i never did before when i rode, so may poss be able to drop a few psi depending on the wall strength.
cheers for the input.