As you say that I remember... I did the same thing Sulli 10oz flex.... I could have gone with the 12 if i had enlarged the hole in the formers... while my LHS guy said it won't be a problem, I chose not to... 10 gets me 7 -9 minutes depending on throttle... It could get 10 minutes, but i like to run her rich. I only ever fly for 5-6 minutes at a clip anyhow... but yes that stock 8oz is a bit small even to me. I also went with 5 cell pack and 2 servos on the elevator... I may switch out the clevises as i'm using the stock right now... For an easy sly maiden i didn't see the point. i'll go 2-56 when i'm ready for high rates.