

I think it might be beyond repair.
yes, this seems to be the answer
being the genius that I am 😁 , I imagined that I would just put the driver pin on top of the key pin, put the spring on top of that, and then compress everything as I slid the cylinder in. It’s obvious to me now how that is impossible, but it took me actually seeing it to understand. The picture on the left below shows how hilariously far off I was in my thinking.
So I instead put the spring into the lock body, then balanced the driver pin on top of that, which is what you can see in the picture on the right. While putting all of the springs back in would be fairly easy (having not actually tried it of course!), that driver pin is barely hanging on there. I could probably do one, specifically that very first one, but I doubt you could manage to compress all of them and then slide in the cylinder.

At least I am learning more about how everything works, and in the picture on the left below, I think I figured out which order the pins go, or at least got really close. I’m pretty sure there were only 4 key pins, assuming the fifth spring paired with the retaining pin.
On the right pictures, you can see the inserted 6 pin comb that I used to create this fine piece of deconstruction. It seems like that pin sticking out at the far left (#6 in my original picture) could have been responsible for my problems. I guess one of my lessons learned is to know how many pins there are, and then use a comb with a matching number of pins or less.

Let me know if there’s anything else to try, or if anyone wants a picture of something specific.
FYI this specific lock came in a set of 4, the Master Lock 140Q, purchased in December 2016 from Amazon.






FYI I did sand the side a little bit, but either I still need to keep going, or there’s something I’m missing. It’s not that easy to see in the pictures, but I am sanding some of the coating away for sure, and I feel like it’s starting to sand off some of the actual body material. I’m still not seeing anything close to your picture.
Oh well, thanks for the tips! I’ll keep the lock as a souvenir and at some point continue sanding and tinkering with it.