Good day to you. Unfortunately, we haven't checked all the posts yet. There was no time for this until now. At this moment, only those posts that have been sold and are being sent to customers are being checked. Currently, we have found about 10 posts with crooked threaded holes. Shipping even one defective pole is quite expensive and time-consuming. The problem regarding posts is not complicated. The holes are simply not drilled in one straight axis. I can possibly send you a short video. I think that the solution to this problem may be, for example, sending me an additional 10 pcs. of posts during my next order, or more if we find any faulty ones yet.