Quoted from Agent_Hero:
Anyone ever rebuild the slingshots? What about the Batwing cannon or Batcave kickout? Will anything beyond a new coil sleeve (and new rubber rings in the case of slingshots) make much of a difference? The slingshots on mine seem a bit tired, the ball coming from the Batcave seems to come around the ramp kinda slow, and the Batwing cannon does a bit of a stutter at the start of its travel.
Slings, cannon, and kickout are much better after refreshing them. Only issue that I still have is the drop down to the kicker from the ball lock--it always falls too far forward (in front of the switch) so the kicker cannot kick it around the loop. I have secured the upper 3 ball lock habitrail ramp as far back as it will go. The only two "hacks" that have worked to get the ball to fall back against the kicker properly are a piece of dead drop foam or a rubber band, either one being placed at the small overhang as the ball falls down to the lower kicker habitrail ramp. The adhesive on the foam is too weak to keep it there for very long as it dries out over time. The rubber band is too noticeable to be a long-term solution but it's 100% reliable. Like I said, I took the wire ramps out of the machine hoping to re-align it and possibly figure out where the fault in the process is, but reassembling it didn't resolve the issue.