Tension measurement for double butted spokes
I just finished building up a wheel for a fixie, and I have a question concerning spoke tension.
I am sort of a parts bottom-feeder - for the build I used only stuff from my parts bin. I used an old 27" Araya single-wall rim, 32 used, double-butted 1.8/2.0 DT Swiss spokes, plus 4 used, no-name straight gauge 2.0 mm spokes. Now that the wheel is done I'd like to even out the spoke tension as much as possible, but those four straight gauge spokes are giving different tension measurements than the double butted spokes.
So - using the Park tension meter, should I consider the double-butted spokes as 2.0 mm gauge, or as 1.8 mm gauge?
And is it totally ridiculous to mix and match spokes like this?