I tried everything I knew of to get these stains off (iron out bath for days, CLR, muriatic, textile gun). Then I tried Whink rust stain remover for 15 minutes, here are
WHINK 24 oz. Rust Stain Remover (Case of 4) 349944 - The Home Depot
Amazon.com: Whink 01261 6 Oz Rust Stain Remover : Health & Household
Amazon.com: Whink 1261 Rust Stain Remover, 6 Oz, 6 Fl Oz, white : Health & Household