I'd agree with what some posters have said. Find a few reliable markers that you don't tinker with that always work and it'll help ease what you're feeling. I know personally for me I'm just happy having a bag of 4 markers that always work when I pull the trigger. I personally am NOT the tinkering type so if a marker doesn't work for me I usually know it's a relaitvely simply fix but I'm ham fisted so I usually sell off a marker if it's got something that would require a complete teardown and rebuild to fix. I just don't have the aptitude for it. With that said I've found especially for markers like my PG that I only need 1 tool to tear it down and that's a valve tool. But most of my markers it's usually a quick lube and clean and then put away and they never fail me. I'm hoping the new GoG gun I pre ordered will be as reliable but hey it's a mech spoolie so it shouldn't have too many gremlins as there are only a few orings and not too many moving parts really not to mention no electronics to go bad.