Dynavap just created the captive cap. I dont see why you put the notch where the cap has no real elasticity. So i put the notch where it belongs, at the most flexible part of the cap. This is made with an '2019 M' Model, but it should also work with other tips. Not sure about the '2020 M tip' but it should work according to the pictures. Maybe someone can try and tell me if it works. Its pretty easy to do. you need: -Screw driver -Hammer Before you start smashing! The cap must be pushed down all the way, or your notch wont be at the right place. Just take the screw driver as shown in the picture, point it behind the fin of the tip and give it a little hit with the hammer. Test it and use the hammer again if the hold is not stong enough. PEACE
