In reply to TimC. I see that you have used 4 screws to hold the canopy on. I used to use 6. But I have discovered after many crashes that the Twist will often break just behind the canopy. So actually putting a screw hole back there will weaken the frame right where it is the weakest. I still use a few screws to fasten the canopy but I am careful to not use any near the aft end of the canopy. It is an achelies heel back there. I use a few screws forward, and some clear silicone. Seems to work just fine. Jim Tucker