help leak

[blaineanator]

just got a new va for my pilot acs and evil detonator reg.i installed it and its fine but it leaks out the va screw (see pics) and the op is like 500-600 psi and the main reason i converted to lp is to get more shots. what do i do for both problems i tried liguid thread sealent no go help!
ps: im going paintballing friday so it needs to work

please view the pictures
[IMG][/IMG]