"OS will you please get on the boat"

Dont be so quick to think that just because these Evolution engines come "pre adjusted" from the factory, you wont have to mess with them at all. I've got two Evolutions, a .46nt and a .61nt, and I've had to readjust both the high speed and idle needles on both of them to get them to run at all out of the box. The .46 was easy to get set, even though I had to go outside the factory stops to get it right, five minutes and it was running like a top. The .61 on the other hand, has been a stone cold B***h to get set. I dont know what kind of atmospheric conditions they simulate at the factory to set these engines up, but they are not anything remotely close to real world conditions in my area. "pre-adjusted" to me just means they got it to run at the factory, and "factory run-in" just means that after they got it to run, they let it run for 5 minutes or so. They DEFINITELY do not "break in" the Evolution engines at the factory, as some on these forums have stated in the past.

I would save my money and by 10% to 15% nitro, with 16% to 18% oil content. I started out on Powermaster, and have now switched to Wildcat Premium Extra (15%). As far as the Evolution manual saying that changing fuel brands will mess up your settings, maybe, maybe not. I made the switch from Powermaster to Wildcat, using the same nitro and oil content, and didnt have to adjust anything.