Frank;
1) Yes, a drop of gel superglue will hold the magnet in
2) for the non-throwing I suspect a short in the track attached to the curve outlet. Make sure the rail that doesn't have a contact is gapped from the end of the switch stub rail. if It is touching, any car on that track will drive the anti-derail to move the switch to that side and keep it there.
I tend to isolate the rail 1 section back and let it short at the switch end, giving the switch longer to throw if a fast moving train approaches.
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