Need advice for unseated frets problem

[McCreed]

Hi McCreed. I use a sand bag under the neck and a nylon hammer to hammer the frets in place. I do a proper fret set up once the guitar is together

Thanks Andy. Yes, on past projects I've been able get by with tapping with a nylon hammer also, but in this case it was like "whack-a-mole"!!!
I'd get the end seated, but a couple taps working toward the middle, it was popped again.
It's not that I couldn't have pulled and reset/replaced all the frets, but it would have been a lot of extra work for brand new build.
But, all sorted and a happy ending.