Quoted from Sea_Wolf:

Realizing ‘Dirt Flipper’ is no longer on Pinside, I was wondering if anyone else could expound on this thread. I recently picked up a nice Williams Space Mission for a good price and have resolved all the issues it had (thanks to a couple of fellas on here) except for the one brought up by the OP. Rookie here and haven’t been able to figure out the weak ball return. It’s not launching upward, it’s just weak. I cleaned the 4 A switch on the score motor as someone suggested and checked it but it didn’t help. After taking the apron off and manually tripping the switch underneath without a ball laying in the outhole, the coil fires and the kicker kicks forcefully but when you let a ball drain into the outhole, the kicker struggles to move with much force against the weight of the ball. It may take 5-7 times normally before it can get it up and over to the shooting lane and not forcefully at all like my Aladdin’s Castle. I took a smaller tilt ball and let it fall into the outhole and it can usually get it the shooter lane but still not with much force. Seems to me like it’s something mechanical but I’m too green to know for sure. I will be glad to post a video of it when I get home from work. Thanks for any advice.