Suggest you to plate rack ( Delta parts ) and barrel ( MAP screw ) by CK-700 and muZen 999ZF ( all u-83 passivated ), then put them in NSS Chamber till the red rust occurs. I know we are using the big NSST chamber, I think we can utilize the free space of it.
[4:14]
Excuse me, better to use " muZen999 ZP vs CK-700 ".
ZP not ZF