Sorry to jack the thread for a min, but I think Im in the same boat as you.
Im running a stock motor that has only been bored to .40, stock carb with just a K&N/Uni filter and also Vforce Reed cage and reeds.
I too was thinking of purchasing a larger carb. I dont plan on building a 240 kit, but was going to freshen the top end up with a new hone and piston change with the possibility of a P&P job this fall. For you guys that have been down this road think that a 34mm carb will be ok for right now on the near stock setup until the rebuild?