Here's the original purple Lane-Guides, cracked and stuffed too:
The shoot plunger had issues, i think it was bent from misuse? and although someone attempted to file it, it still 'grabbed' a lot on the plastic sleeve.
The plastic sleeve was so tortured that the end shim had come off, and often the sleeve would come out with the plunger and often slow the springback, launching the ball 1/2 way along the ball aisle..
Replaced with new shaft, sleeve and springs, hey, why not? huh?
MM.