I have a couple of issues with my AC/DC and I can't figure out how to fix them. 1. The cannon will sometimes fire by its self when a ball is loaded. 2 the auto shooter looses power during multi ball and won't shoot the balls more then half way up the shooter lane. I thoroughly cleaned all the parts of the cannon and the shooter coil. I replaced the sleeves and checked all solder points. Any help will be greatly appreciated!