Paintball Gun Oil Ruining O-Rings?

[tre01]

I have been having problems with a JT Excellerator. I couldn't figure it out, but I think I may have. The gun would work for a short while after replacing the O-rings. I would oil them with 32 Degree oil made by Kingman. Then, a couple of days later, the gun wouldn't work. It would shoot a couple of times rapidly every time I pulled the trigger and it would uncock itself. I noticed that the O-rings were stretched out when I replace them. Do you think that this is the problem? Please let me know. I have tried two different brands of Polyurethane O-rings and the same thing happens. Input would be great. Thanks

[Knowledge]

I had a problem with my internal O-rings expanding on my Shutter. Someone told me that it was because co2 had come in contact with them. Maybe that's what happening to your gun.