Some time ago, I purchased an Automag from eBay. It had an occasional leaking problem. I cannot recall if it came like that or if it developed shortly after, but it was manageable. Since the tank that came with it had a broken gauge, and the tank was out of date, I used cO2 with it. I can't say that this caused the problem, but it may have accelerated it. It usually stops leaking when the trigger is pulled, but as the problem gets worse, sometimes it leaks even when the trigger is back.
Now I haven't used it in a good while, but I want to use it later this month and need to know what to replace. I thought it would either require a power tube O-ring (part #123) or a different spacer. Currently it has a .220 spacer. If I don't need another spacer, I would like to not buy the kit. Then again, if I replace the O-ring and it turns out I may need a spacer, I'll have to pay shipping again.
I also partially disassembled it today to refamiliarise myself with the parts and the issue. I discovered that the bolt kind of sticks when pressed against the base of the power tube. It takes a firm, but not a hard press to do so. It can be dislodged again with similar pressure. Given that I can easily do this with my fingers, I assume this does not constitute bolt stick. Is the bolt meant to effortlessly slide back and forth or should it have a slight bit of hold when reaching the fully rearward position?