Originally Posted by Big_Boy_4005:
I'm thinking of using a plastic strip to pinch the back of the wheels. I haven't tested it yet, but in theory it should work. The bristle idea also sounds good.
I wonder if you could combine the two & use a cheap toothbrush head to pinch the wheels? If you could adjust the distance of the tips of the bristles to the rail you could alter the braking force, I suppose. Then again, I'm a doctor, not an engineer....