Ok on my 6x6.8 bhw build I used a magpul ctr stock and I have noticed it has a lot slop. Was wondering how the Luthar stocks are if they are solid or if all ar stocks have slip. I bought the ctr think with the second lock it would lock in tighter on the buffertube. I have nocticed sometimes I get vertical stringing and was kind of wondering g if the stock was causing it. Any help would be great.