ORIGINAL: BullardRM

I have a 3W 75 in a H9 33% Extra. After 15 gallons of fuel through it, it just ain't getting the job done. It runs out of vertical pretty quick. I was recently told by a club expert, that I have the early version of this engine. He says there is a newer and better version that will produce considerably more power. Can anyone verify what he is telling me. he also says I need a ZDZ 80. I am thinking 3w 100, but he says that will overpower it. Dick Hanson did an articel with the exact plane and 3w 100 with canisters. Recomendations--?

Thanks in advance.