Hi, I am starting up a bread project for which I bought 22 USED strapped loaf pans (a mix of Chicago Metallic and Ecko). The pans are in good condition but extremely dirty from professional use, and I've tried scrubbing, baking soda, Awesome heavy duty cleaner, SOS pads, Easy Off.. it's basically a nightmare. I dared use Easy One (yes the oven cleaner made of lye) just on 2 to see if I could at least remove the baked on sticky/greasy crud in all the crevices connecting the strapped pans and used a brass fiber brush, with heavy duty gloves ... and even after soaking 48hours was still an effort to get out all that was baked on there. The Lye from the Easy Off naturally opaqued the shine BUT it did finally get most of the crud off, BUT since either corroded the a layer of shint I got spots of rust blooming... Ugh it has not been a simple journey. Or I just don't know what I'm doing... Any suggestions that aren't "leave it in hot water with baking soda" ...? If Lye struggled, the crud laughed mercilessly at my baking soda vinegar efforts... Help?