[priobe]

I am running a 40 mm venturi.

However, as many have mention (Inglese and others) by moving up to a 42 mm you will only have to adjust your mains. I think differently I think more than likely you will have to rejet your mains stack as well as idle slightly, as Ejaro is experiencing.

My ultimate goal is to go to 42's them remove them all together ( no choke) just to to see what will happen.

Another item I dont understand is why would one increase the 48 to 51 to only put a choke back in it. You will then reduce the 51 back to what ever the choke is.

An I know the throttle body is not beveld like the choke but the 37 mm choke that many were running were probably more resticted than what ever turbulance the no choke would deliver.

Just my .02