Sega games in general...I hate shopping them. It really appears as though they kind of winged it as they went as far as design. So many things seem juryrigged at the last second as you observe how they assembled stuff. But as someone that has shopped most electronic pins at least once, I would say STNG ranks right up there as most difficult. Especially if you are doing. LEDs under the playfield, which requires pretty removing most of the ramp assemblies underneath. A bit unusual for a Williams game.
An obvious tip for newbies, and for people like me who are not so mechanically inclined....I require all my guys including myself to "map" a game as you are taking it apart. We take photos of everything, then print them out and code all the parts. Then, it's quite easy to reassemble just about any game! Been at it 35 years and this is by far the best system I have come up with. Also, other people can jump in if another was in the middle of a shop job. Get a few plastic boxes with bins with dividers and label on the printout sheet where you placed the hardware (iD each bin of course). When we unplug the connectors we use different color labels for wach one. Do these steps correctly, and write good notes on the photo pages, and you should have few problems. Even new people can come in here and correctly reassemble a game after going through just one pinball with someone that is trained. I'm sure there may be better ways but the extra time is worth it and I haven't discovered anything better.