I have an old Hamilton ACW5 from 2000. I'm having major problems to the point I can't keep my wash open. I upgraded years ago to Crypto Pay and switched to Mars bill acceptor. I accept bills and change, but they give back change. Credit card accepts but it won't relay the signal forward. I've been told about door replacements that can be done. Does anyone have any experience with the door replacements and who manufactures these?