Yes the Gorilla glue can be messy. I said that.
Winegums' suggestion of a tooth pick is actually a great and easy idea i did not think of suggesting
I don't understand all the scaremongering regarding drilling the magnet!? Yes it will break up, i said that. But they are looking to replace it not save it..
I've broken loads of rare earth magnets, not sure what the danger is other than possible sharp bits of metal flying around the drill bit. But your drilling metal, so sure. Wear glasses!
I replaced the original magnet i put in my home made dynastash with a dynamagnet using the exact method i described before.
But obviously each to their own, any level of DIY had the potential to be dangerous..