The grip on my Walther LP400 and another that was in the club was loose. (i.e. when you shake the pistol you can feel movement.) No amount of tightening the Allen bolt removed this slight movement that must be detrimental to accuracy. It appears this is a common problem with these pistols. Ive seen the tip on the Rink web site to use a disc of emery paper between the action and the stud and Ive tried that to no avail. The stud seems tight enough.

Has anyone else come across this problem and how did they solve it?