Quoted from kapsreiter:i don't think mylar is a solution
when the ball hits the edge
Cliffy where are you
I'm here. I tried my stern outhole drain on my own MM with not so good results. The semicircle routing of the drain creates a triangular contact area for the ball so it will hang on a slow roll. I have a new design idea though and I'm working on it. Pic attached shows the hang problem. I plan to make one narrower so it doesn't hide the artwork and longer to prevent the hang