Hi and thank you for taking a look at this. Can this crack in a friend's neglected 1970s 12 string be repaired successfully in-situ ? Or should (can) the piece be removed and re-glued ? It opened up this evening after I had been humidifying the body space of this pretty much unplayable old girl over a 3 month period, very gradually getting the action from 1/4" (!) down to 7/64ths at the 12th fret. An "oh dear" moment.... Happened after I strung it up with 6 strings to pitch, and was enjoying my short lived triumph ! I guess all that movement didn't just go into the body top ! I have high grade epoxy, Titebond Original, and slow to fast superglues. Regards .