ULT problems

[nuevara]

Got a ULT assembly and it has problems shooting. Has anyone run into this? Shave the pin? Changed the o-rings from a mag rebuild kit and still the same result. I've had it shoot a few time after dropping some oil in the teflon o-ring in the valve, the pin seem to stick. Any ideas? Thanks-Rich

[Ando]

Don't shave the pin!!!

Ck to see if the pin is bent.

[Spider-TW]

While you're in there, oil the pin o-ring inside the body.