New flight report: I tried a 14x6 prop on the plane, and the difference is dramatic. The plane flies slower for sure, and take offs were shorter. But the most important difference is that I can now fly a smaller pattern with this prop, even the turn arounds, so I am pretty much happier than I was with the 13x6. I am also using more throttle, like Shakes268, no less than 1/2, and using full on the uplines. Finally, I am using more, sometimes full, elevator on the loops, Cuban 8s, any time I pull vertical. This shrinks the size without ripping the wings off on low rates. The plane climbs differently, however. With the 13x6, it seemed like if I didn't throttle down, it would climb forever. With the 14x6, the plane seems to run out of steam. I think an intermediate prop would be perfect, but it is hard to find a 14x5. Overall, this prop suits my style of flying, so I'll stick with it for a while. Engine was turning 11,200rpm with 13x6, now it turns 9,900. I hope I'm not hurting the engine.
Also, thanks for confirming the pitch-up-at-throttle-down on your plane, Shakes268. I tried pushing down on the elevator when I throttled down for landings, and that does the trick perfectly. I wouldn't have tried it until I heard your plane did the same. This cured the floating landings. There is probably some mix in my radio I could use, but I just as soon using my thumbs for this until I get picky or get better on downlines.
I think it is time to play with CG now. I also suspect that I don't have enough right thrust on my plane, judging by the verticals, but I still need to be sure it isn't my thumbs. Dang plane goes where I point it...
Ed in MI, Vectorflight Edge 540 , ST 0.90, 14x6