440 871 supercharger ?

Be nice to find someone, machinist, with a surface plate to see if the case warped?
it would be nice...remember it ran a month ago no issues, removed just the blower not the intake....and now all of this.... being 0.04 around all rotors and it turns free not bolted up ...and to nee 0.09 to be correct , a 0.05 difference floors me...how can this be?