Check to make sure you have the side of the LPR hosing with the little notch for the set screw facing down. Also check the o-rings on the outside of the housing for any nicks and replace them if you find any. Also replace the bolt sail o-ring with a brand new one. That should fix it. If not you may have out your allen key into the wrong hole and damaged the LPR manifold in which case you would have to send your gun into Dye.
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