Looking for a wee bit help please.Building a D7 trials bike.Nearly finished it but when out testing it in the field

next to the house the bike pulls well from the bottom end but goes off at the top end(looses power/flat).It is

fitted with a 22mm Amal concentric carb and the std. pan cake filter(not the one with the strangler).I'm not

looking for an instant cure but a wee point in the right direction would be braw i.e. jetting???

cheers the noo Brian

P.s. the carb is brand new

Give it a bit more jucie on side big screw is Rickover and other is fuel air screw it in a bit more

Run it without the air cleaner - just long enough to see if it is restricting the air flow. I had a real problem with that on mine.

Put a 26mm carb on put a 170 main jet in and a 30 pilot jet