I'm about 3/4 through rebuilding a 70s vintage stereo system. The front panels were pretty unsightly but I'm managed to remake the power amp panels. The pre-amp panel, though, is using rectangular pushbutton caps (manufacturer: UID). I was hoping to avoid the original rectangle cut outs an go with round pushbutton caps and therein lies the problem. The button shaft is ~ 5 x 4mm and all I seem to find in round caps are significantly smaller footprints. Suggestions anyone?