I'm going to call peak rc tomorrow and see if they have the Sayne 108 carb. I'm hoping it will be even cheaper. Sayne is the maker of Magnum and I think the Magnum and Sayne motors are dups.

Right now, I've got my G90 set up so it transitions perfectly. I hope the Magnum carb transitions as well. The extra 1000 RPM will be great though.

Do you have any idea why there is such a big increase in RPM with the Magnum carb? I wonder if it is just a question of throughput.