I declare the playfield disassembly complete. Playfield is ready for some major cleaning.
I installed the new ball trough without any trouble. Here you can see the old and the new side by side:
Note how the new design uses rails as ball guides instead of flanged metal. Hopefully they won’t be prone to divots like the old one. Here you can see the divots that developed on the old one, causing the balls to get stuck:
I thought this was the dirtiest coil sleeve I had ever replaced until I discovered that the original part (WMS #03-7067-5) is black:
That’s not to say that the entire assembly wasn’t filthy. The blue rubber bumper plug (WMS #23-6702) had developed a black flaky crust:
Also replaced the left troll carriage (WMS #04-10763.1) without any trouble. The bottom ring that attached to the armature had popped out a little bit. Just that little bit is enough to make the whole thing jam up against the housing and get stuck. Here you can see the new and the old side by side:
And the old one looking from the side:
It looks like the right-hand troll had the same problem at some point and somebody repaired it:
Perhaps I should make a ‘Non-doofus Previous Owners’ category.