The G-26 should do better than that. It's possibly not broken in yet. However, the bottom line is - too much prop. At 3/4 throttle, it's turning all it can turn. My G-23 turned an 18 x 6 at 6800.

I disagree with those who say there isn't much difference in 3/4 throttle and full on these gassers. I've run a G-62, G-38, and G-23 and had good, full, even throttle response all through the butterfly range.

Dr.1