#1
Anyone have any tricks to stabilize a neck on a SG Special?
I just pick this thing up and it goes out of tune. can you loose the bolts on neck and maybe reset it? Damn tooth pic for jolly green giant.
#2
No offense but it'll be inconsistent due to the fact it is a low end Epi.
Try changing the strings.

Do you hear a plinking sound when you tune?
That would suggest the nut is binding which would require some graphite from a pencil or recutting the nut.

The bridge might have a burr on the saddles. Have a look and see if that could the problem.

Undoing the neck bolts and doing them back up won't make a significant difference as it'll just go back to the same spot as it was in before you undid it.