Thanks for the explanation
I tried to cook baby backs, never could get them juicy. I gave up and now all I do are Spare ribs w/ the flaps or St Louis. More fat, super juicy.
Ospho is a great product. It basically changes rust back to a black paintable surface. I used it for any rusty metal rehab.
You'll have success with that process.
I have used magic erasers, they work well, but fall apart quickly.
I have used zep for grease or dawn dish soap with a dobi scrub, both work well.
With any of the approaches, hot water is a key.
I enjoy using just olive oil, salt & pepper on spareribs.
250f, bone side down for 2 hours w/ smoke.
wrap in foil, meat side down, back on for 2.5 hours.
the porky goodness shines and the meat is very tender.