... If so, I hate to be that guy, but I have a hard time with that 100% true. I have an 1115 lb 360 cub with increased incidence, as far up as I could go without chasing my tail elsewhere, inboard Keller’s, TL, VGs, little tweaks here and there and a pretty long/flat prop (creating a decent brake with power) ........ I can not come no where near 25mph (groundspeed)! What am I missing???? Speeds in the high 20’s are what guys with 100+” flaps, slats etc are seeing. That is with the nose to the sky. Fairly safe to say most stock flapped cubs (no Keller’s) doesn’t like flying much slower than 40 with no wind and still being able to land on the mains with much visibility. Your saying a 12+mph reduction?? With my mods above, which in all reality isn’t much or anything crazy, I have a hard time dragging the tailwheel on the ground while keeping the mains up much under 33-35, can go a tad slower but there’s ore power in. I guess I need to up to 300 hrs a year instead of 200