Yesterday as I was riding my tandem, we threw the chain 2x as we were upshifting onto the large ring. One of the times it happened, the chain jammed between the chainring and the crank arm. I think the adjustment is properly set now, but would like to avoid the possibility of the chain getting jammed in the future. The outer chainring does not have a pin on it as some of the newer ones do. I was thinking that I could just drill and place a screw on the chainring behind the crank arm.
Is it OK to do what I'm thinking of doing or should I instead look for a chainring that has a pin instead?
Thanks for your thoughts and input.