Hello.

When I bought this game I found two lifters on this stack missing/broken off. Looking at the schematic it appears I need two different lengths for proper gaps between the switches. I assume this will apply to games similar to Space Mission? I have a caliper to help select the correct length needed. Just received a parts bag from Steve Young with all the possible lengths (have several projects queued up now!). I've looked in the bottom of the cabinet and didn't find the remains that broke off unfortunately.

They are the middle two on the impulse switch stack, the second stack furthest away from the motor. Here is a picture to help reference those missing. Once I get these in place I think the game will be playable once again for the first time in decades! Currently if I play around with that stack with my hand I can get the machine to start up, but as soon as I hit something that causes the score motor to run the reset sequence takes off again....which makes sense seeing which switches are involved.

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Maybe my eyes are playing tricks on me but does the second from the bottom appear to be slightly longer than the top two?

Based on this I can have the top two and tiny one at the bottom but that second would need to be slightly longer?

--or-- am I being too careful and a slightly difference in length wouldn't even matter for this application?

Thanks for the quick response!

rolf_martin_062 currieddog thank you both. I have settled on one size that I will attempt for both switch blades and with a few drinks and F bombs hopefully can have them mounted on my switch stack this evening. I have some spare blades just in case but prefer to use the existing on the machine. Going to try the hammer/ crushing approach to mounting them rather than melting them via iron since I don't have anything that I can bring down in temperature enough to not vaporize the tips.

Updates to come soon hopefully!

Alright I think this switch stack is ready for use!

So I found it really difficult to get the lifter to attach to the existing blade from the machine. Reason being the hole is much bigger than the pip on the lifter. However I found the extra blades I got from PBR fit in snug and a little help from the butane torch really locked them in there. So then I had to add new contacts, glad I bought those as well. Only down side is they don't quite line up the same way as the others did. Because the lifters are "inside" more, I needed to SLIGHTLY trim back the mate of the switch contact so it wouldn't bind up on the new lifter.

It's not the prettiest fix but it works. All in all the machine is a bit rough but I can't remember playing a Space Mission in a LONG time. Plus my buddy and I like Steve Kordek games and have fond memories of him at Expos years ago.

Haven't tested the fix yet but need to stop getting distracted from another PF swap so back to a different game tonight. Mechanically this fix appears solid.

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