Did the canopy mod to prevent it from slipping out on backward flights. Item needed - 10mm long M3 cap screw.
Drill a hole on the canopy clip big enough to for the M3 cap screw to go through.
Put the canopy on n mark out where the screw should be. Screw it in place.
The canopy should clip on nicely to the cap screw, this will prevent it from slipping.