PBG has been amazing. Their customer service and support is outstanding.
So the summary of the situation is that I am returning the kit and a replacement is being sent. They were really honest with me about either waiting a bit until things settle down with manufacturing or going with one of their in-stock standard PSH-1 kits.
So I have gone the latter, as I really want to get into building my second guitar.
I think I will close this thread and open a new Build thread to start again when my replacement kit arrives.
See you all again soon!