I cleaned 15 Nitronic 60 1/4-20 1/4 long helicoils and 4 of the 5 custom 1/4-100 bushings. I used the standard 1:30 simple Green:DI water, DI water, then isopropanol baths and sonication for 10 minutes each. I am currently baking them out at 200°C for 48 hours.