valve assemble leaking

[Groundhog]

I recently had a problem with my RT, so I purchased a parts kit to rebuild the the valve assembly. The problem now is it will not stop leaking.
When I gas up the marker the leak starts, pull and hold the trigger leak stops. It is a major leak, not one you have to put your ear to the marker to hear. It can also be felt on your had when you hold the grip frame like you would fire it. Air may be leaking down the barrel also.
I thought this would be a simple thing, have new parts, watch video, watch video again this time ignoring the blond, and presto rebuilt valve.

Thanks for any help
GroundHog

[PyRo]

YOu didn't put something in, where is it leaking from? Any leftover parts?

[Butterfingers]

you might need a smaller powertube spacer.