im sure theres other threads but heres one by me personally and i'll help anyway I can.
So I purchased my G5 off ebay (so it was used and broken in already)
I did my research LIKE YOU SHOULD.
1) DO not use the GREASE/LUBE they provide. toss it in the trash
-I followed this rule and used my Planet Eclipse grease. Light amount on the bolt because the orings are actually in the breach.
2) ONLY USE A LOW to MID pressure tank.
- HUGE rule guys, if you have not bought a tank yet. get a Ninja tank. or atleast go buy a ninja reg.
I removed both red shims from my ninja reg. (high pressure = your gun will give you hell.. and make you cry)
3) Gun wont ramp
-I dont use ramp.Thats for people with slow fingers. (or tournament use blah blah)
Mine was already on ramp when delivered so i test shot it with it on (this was because i wanted to see if there was any shoot down with my tank setting)
BUT there is a tournament lock switch..which im sure was other peoples problems.
i followed these rules first. then took it in the backyard. gassed it up and ungassed 10-15 times. No leaks, busted o-rings, nothing.
it will keep atleast enough to shoot one more ball after u remove tank so keep that in mind for safety.
turned it on (the light is hard to see in the sunlight so know that.)
tossed on my halo too, and filled the hopper with 5month old bad practice paint and let her rip.
Not 1 chopped ball. Almost no kick for me, quiet, and this trigger IS the best trigger I have used.
Overall if you follow these rules I believe you will be happy.
I will actually play with it this saturday and update.
This thread is just for those that are scared to get one.. but DO want it. Just follow the mid-pressure tank advice and The lube advice. if you dont.. im pretty sure you will be just waiting for something to happen.