Hello,
Yes, yes, and yes. That's exactly why it's so frustrating! I'm not new to this, but recently, when I started creating entire NPC packages instead of single characters, it started bothering me more than usual.When I make just one NPC, it's whatever - it only takes me a few extra minutes to fix. But with the recent package I made for Riverwood, it took me almost an hour longer to resolve those annoying neck seam errors.
I'm using the newest fixed version of the "CK" available on Nexus, and it works great - aside from the nature of CK itself, which crashes often (haha).