I'm struggling to fix my Space Shuttle that I picked up a few weeks ago, at which time played great with no issues. However the past week has been hell keeping it up and running. My initial problem was the 2.5 MDL fuse that controls the solenoids kept blowing randomly. When the fuse would blow, the game would not kick out a ball into the shooter lane, nor would the slingshots, jet bumpers, or ball locks activate. I replaced the fuse about 4-5 times and finally figured out the right lock ball chamber had a stuck switch and the kicker would activate over and over and over again until the switch freed up. I fixed the switch as it was simply bent out of place. Played 2-3 games with no issues and now I'm back to a game won't start because the ball won't kick out into the shooter lane, however the fuse is not blown. The MPU shows code "0", so no errors there. I'm extremely new to pinball and pinball troubleshooting, so my skillset is very minimal at this point but I'm willing to try almost anything. Any advice is appreciated.