Sprayed blueing on sleeve of SYMMCO SF-610-6 bearing barrel. Stacked bearing, welded pushrod, and SYMMCO ST-1020-2 thrust washer stacked together. Used a 0.015" feeler gauge for distance and scratched blueing with scribe. Took apart the stack, but the blueing scratched or wiped off the barrel, leaving the scratched blueing line indistinct. Chucked the bearing in a mini lathe and parted the bearing, long by a little over 1/8". Back in the lathe but wouldn't center chucked on flange end. Scored barrel and filed excess.