i have a 32/36 with a 2 inch system, i am asuming that you have a hitachi standard 20/26mm?

i tried changing the jets on my hitachi and didnt make much difference, i think the 20/26mm is more of a ecnomy carbie, i couldnt seem to get much perfomance down low out of it. putting bigger jets in is just going to make the hitachi run much richer with out much power increase, if you more power increase probaly best to increase your carbie size

the weber has given alot more power down lower and is still giving me good fuel economy

i would say go and get a 32/36 or maybe a sidedraught