Lol.... 
I was fighting Pawz in his 38 in my K4.  We start slowing down in a horizontal scissors... I yet again forget about the slats... SLINK!... next thing I know I am upside down, Pawz has all the advantage and I am soon in the silk.  Flying a K4 through all speed ranges is pretty darn challenging.  
Late edit:  Try nearly 6k ROC.  Come of the rw, accelerate to 250, pull the leading edge of the wing to the horizon and hold on...magnificent.