valve leakage

[Stanzo]

Hey, well, i recently got a 68 classic automag. Well, theres a leak coming from the back end between where the actual valve connects to the rest of the body. Ive replaced the o rings...but it doesnt seem to help.
What could it be?
Thanks

[VTLO910]

Video for AutoMag (http://www.youtube.com/watch?v=vehPc7vuK20&feature=related)

Thats part 1 of 9, which you can find the rest right there on YOU TUBE.

If after watching them you still have any issues, I'm sure you will get all the help you need.