I would like to kindly remind the newer of our members to stay focused on the Originating Post (OP) of threads they participate in.
This thread originated HERE: http://www.styleforum.net/t/190279/dark-stains-light-cracking-imperfect-stitching-on-brand-new-ae-strand#post_3422423
When anyone introduces other non-related questions into the thread, this is what is referred to as 'De-Railing'. It just confuses the original intent of the thread.
Ultimately, the Originating Poster or Thread Starter (not mentioning everyone else) can get caught in a spider web of advice or issues that had nothing to do with the original post. Please be observant to the threads you participate in.
If you have a specific question about a specific issue, it is better to start a new thread dedicated to that issue alone. It will help minimize chaos.
That is my $0.02 worth on it.