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.
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.