Yes Scott, I had to lean the reg about 1/8th turn and can't remember what I did with the needle as I just tweaked it with the tacho until it was just shy of peak rpm. It'll take a few more tanks to dial it in.

Apereria, you're right about having to flog it harder to get the same performance. It's the little things you notice like pushing/pulling into the wind at the top of an upline, with the extra grunt you could wait until you were halfway over before feeding in some extra power to accelerate a bit to keep that constant ground speed look, now I'm needing to use the last part of the upline to pick up a bit of extra speed before pushing over.

To be fair, I'm also used to flying the plane with the 360cc tank, the 600cc tank when full is very noticeable. Even with the 360cc tank, I never flew it full for a competition round, only for practice.