I'm really enjoying flying my 2 Vampires, this one in Canadian scheme I was having trouble when going into a loop with it snapping out at the top.
I got one of our very experienced pilots to fly it for me to see if there was anything wrong with the airframe.
Of course it turned out to be me!!!!!!
I was pulling power off too soon into the loop & it stalled.
A simple fix of making my brain ease off power on the downward end of the loop. Now all good.