Impact MK1 (.30) air leak after Power Block upgrade

A BIG Thank You to Airgunmann.

When he asked if I dropped in the quad ring it prompted me to look at the UA install video again.

The installer points out to using the "supplied o-ring".

This led me to realizing mine did not have one and therefore confirming this was the issue.

Thanks to everyone that replied and for your willingness to help me out.