My cg is set at 260, flaps is almost 90 degrees with almost 1/4 crow. But it makes sense with K100 with almost half throttle is not producing enough power to tip stall especially being so draggy on landing approach. I think I will reduce the flap and maybe even take the crow out, and see what happens. Also prior to my T1 I experianced same exact thing on my turbinator Thank you for all the useful info