I just picked up an Ibanez RT650 that I discovered has some loose fret ends. On some, the fret is flatter than the fretboard radius, resulting in both fret ends being loose. When I use the superglue technique:
Trade Secrets! Newsletter at Stewart-MacDonald
on, say, the treble side, the bass side pops up higher. When I pound in the bass side, the treble side pops back up. I suppose the right way to do this is with a fret press, but is there a way with just a hammer? For example, if I pound in one side, how long will I have to wait to let the glue dry until I pound in the other side? 30 seconds? An hour? A day?
You should probably let the glue cure for a while, keeping it clamped while it hardens.
However, it sounds like the best thing to do might be to pull the fret and bend it to a tighter radius. I suspect that if both ends are popping, even the superglue trick may not be a permanent fix.