Hello friends. I have a 1974 Williams Super Flite pinball machine that works fine. The problem is that when you are playing a game, the ball gets stuck sometimes in various places. Mainly it's where the round light lenses are near the top and down where the ball enters the trough before being reloaded. It gets stuck on the edge sometimes before dropping down into the trough. I took my Dremel and gently sanded the edge putting a light tiny angle at the end of the wood and it helped some. I have the legs adjusted as far down in the front and as high up as they will go in the back. I'm not sure if there is a way to fix the little lens inserts as they appear to be just slightly sunk into the play field. If anyone knows a solution to this I would be most grateful. Many thanks in advance for your help.