I have found that the unissued Pakistani guards are 1/16" too tall to fit properly without being sanded down where they contact the stock. Compare them to some brit wood & you will see what I mean. If thats not the problem, see if you can compare your wood to a complete rifle & identify what need to be trimmed. Go slowly when you start removing wood, I have seen too much wood reduced to kindling by folks who went ape with a dremel.