The Red River is pretty much all sand, some of it very soft. There are some good spots north of Gainesville, nothing much east of Lake Texoma. The Red has been up lately from the rain in the Panhandle. It can take a while to dry out once the water level drops. Quicksand happens. Get bigger...
https://texastaildraggersinc.com/
I've heard good things about her. I spoke to her last year when I needed a Stearman checkout, but never made it down there. You're not going to get much warmer than Houston.
The thing that people don't think about with snap rolls is that if you do a snap that gives you 4 Gs in the cockpit, the outer wing attach fitting is seeing 6 or 7. A lot of Pitts flown in airshows have trouble in that area. The way the wing attach fittings are in a Cub, snapping it would not...
I've flown more aerobatics than just about anything else, but I don't do it in my Super Cub. It's not what it's made for, it's not what it's good at.
The FX3 has nice, light, responsive ailerons that practically beg to be thrown around, but the plane was engineered to eliminate weight excess...
I have a Dodge tail brace welded in the back and clamp two or three sledgehammer heads on it when I want to run the cg back. I could've used diving weights, but I already had the hammers.
My plug rotation scheme got tanked with the Surefly when I opened up the plug gap. They say you can run up to .032. I don't think a standard mag will fire that reliably.
I recently bought a project that came with a DDM O-201 with, as mentioned earlier, sparse documentation. I called Don's for some info and was told it has an O-200 crank, C-85 pistons and C-90 cam. He said the important thing with this engine is that it breathes properly. In addition to a good...