One rotor 1st op done:

There's about .0006" taper across the rotor's width when measuring the outside to outside swept arc. (the big imaginary circle this creates while spinning) .0006" taper isn't as close as I'd like but I'm going to live with it. I'm running my rotor clearance at .005" and case clearance at .008" so it shouldn't hurt anything. Twin lobe rotors aren't very efficient when compared to the multi flute helical setups in modern superchargers. I'll leave them alone for the time being and just stick with this. Progressing slowly, but dilligently.

More to come. . .