Thank you Bill. That's excellent info.

I was seeing 11k after third tank, but felt uncomfortable leaving it there throughout the whole tank (14oz).

I'll be putting it in a 7lb Dirty Birdy, 15% Omega with additional 3 oz castor, APC 12 X 7 (break-in and flight), and an Enya #4 plug. Seems to be a good combination with no detonation.