Villiers 32a Parkingson Barrel Amal 26mm Carb What Jets And Slide

[yamjim]

hi im building up a dot white stregnth trials bike with a 32 a bottom end parkingson square barrell 250cc and im looking for pointers on the carb settings ive opted for a 26mm concentric using a round filter what size main jet,piliot jet ,needle and slide would be a good starting point and whats the differnce betwen a 2 stroke jet tube and a 4 stroke one ?. and fork angle on the dot as the frame was origionally a mtx bike with leading link forks the wheel base with ceraini forks is 54 inches any ideas for a good wheelbase and fork angle and good methods for obtaining it ie cutting the frame cheers jim