No idea about the neck size question - sorry.
Is it just me or does it look like there's a ton of relief in that neck?
No it was not. It was the 325th stamped on that particular day. Why come here asking for info then claim something else? These guitars were limited to 250 and Gibson did not change their serial number system for this model.
Maybe ease up on the guy a bit? He's asking for help and being polite about it. He didn't claim anything he said "maybe". Seems innocent enough.
At the time it came across as asking about something he didn't know and then questioning the responses as if they were wrong.
But your point is taken. I'm having a crappy day and that probably came through in my response.
should I tighten it myself? a friend told me to do it a 16th of a turn at a time.
also should i use any oils on it?