I received a World Models Midget Mustang for Christmas last year and I’ll have to tell you that it is one of the best flying planes I have ever had. I bolted on an OS Max .91 with the muffler restrictor out and a 12-10 prop and WOW it’s fast. It feels like it is on a rail. I have flown it 15 or 20 flights and the tail is still working like it is suppose to. By the way, did I mention that I have flown my Piper Cub faster than when my Thunder Tiger Rare Bear tail fell off and I still have the Cub. I had to add a pound of lead to the Bear to balance it with the Saito 150, which is a pound heavier than the tt90. I don’t think a tt90 is big enough to get that much weight into the air looking like an “UNLIMITED PYLON RACER” Ha!