MIP Gauge Diameters

Hello fellow pilots,

I've printed out 3 different sets of MIP gauge decals now, and every set is of different sizes. I'm about to drill the circular gauge cut outs and dont want to goof up my main panel. Does anyone have a Flight Deck Solutions MIP that they could measure the diameter of the flap and brake pressure gauges for me. I believe FDS keeps theirs very close if not the same as the official Boeing parts.

Barring measuring an FDS panel, I welcome comments on what the most popular sizes are that people are using in their own MIP's.