I have seen a lot of ARFs built this way, you really must go over the joints and check them on every ARF. The Chinese build fast, cheap, and are known for cutting corners. The will substitute lite ply for plywood, use CA instead of epoxy for firewalls, etc. I have seen some ARFs that needed few corrections but their is no way of knowning who is building what and when over there so you have to inspect them all. I mostly build my own stuff but when I do buy an ARF I always go over carefully and make corrections and add reinforcing.