Please help / leaking

[yoyoma]

Hello,

I am shooting a minimag with the following setup

ULT with 2 shims
Intelliframe
x-valve lvl 10, 1 shim, middle spring

I am having trouble with a leak down the barrel that is changing as I shoot, sometimes it stops, then it will come back with a slight leak, sometimes it comes back with a big leak. Why is this happening?

[Mag Master 04]

take out all of your shims in yur LX...gas it up, if its still leakin then you know to drop a carrior size untill leak stops and its not too tight, oil the carrior and white o ring and the bolt stem, add shims to perfect the bolt resetting... after LX is properly installed tune ULT to yur liking... report back so we know a lil more information

[68_Classic]

is ur cup seal good cause that happened to me then i replaced the cup seal and it doens't leak ne more