How do you know it's the three way ? Is it leeking form the end of the three way ? Also have you looked at the screw that holds the threeway to the triger rod. It may be that it has sliped. Let me know when you have cheeked these and what you find. Also you might want to transfer this post to the tech room. The lads ther will point you in the direction of manuals and all sort of help.