440 871 supercharger ?

was told i need at least 0.08 clearence, 0.09 is better i have 0.04 did the alum grow? he said i need to have the rotors turned to the clearence i need...i ran this blower for over a year.. pic shows cant get 0.06 in there...thoughts? WP_20201008_10_48_04_Pro.jpg WP_20201008_10_48_33_Pro.jpg