The WM Cub 48 is a good fly9ing plane that is hard for me to get off the ground. I am using a TT54 FS, and it just leaps in the air and stalls if I am not quick enough to get the nose down. We fly from grass and on the takeoff it tries to nose over due to the drag. Then when I correct with up elevator, it leaps and stalls. Never a dull moment with that thing. It will also snap on you if you have too much elevator throw. I would try underpowering it to make the takeoff a little slower and more scale. Another member had one of the regular WM CUbs and it was the same way. His went to the swap meet. I'm still flying mine. Really scoots with the 54 on it. It lands fine as long as you don't try to slow it down too much on final.