Wow is the word for the BP with the OS-160 on her t-roll power is great! Gas mileage seems pretty good to. i can spin 18 x 6 prop with ease. I went with a bigger battery on the servos so i now weigh 12 7/8 lbs with the OS. I am toward the rear of the CG and i still dive some on the inverted lines? Has anyone went far enough back to fly hands off inverted. How about right thrust as mine neeeds more now? talk at you all soon ....