: The conventional wisdom with staple holes is to do nothing. If you have a
: couple of large brad holes that bother you, take a sliver of the same wood
: and jam it in (no glue). The problem with putty mixtures is that you
: contaminate and tint the surrounding area. Then you try to sand the area
: and create a mess, plus you often create a blemish because the sanding
: surface doesn't match the rest of the sanded area.
: Filling staple holes always leads to mild disaster.

I agree with the above. Unless you are super careful with your final sanding you will find stained blotches on the surrounding wood when you glass. You will also find that having spent hours filling the holes, when you sand the filler will disappear as you can't make it penetrate deeply enough. Look on the staple holes as badges of honour.

BUT when you glass put on a thinned precoat ( I used Bote Cote - no amine blush problems) in high temperatures and then drop the temperature to avoid outgassing. Same with your first glassing - drop the temperature.