inv3ctiv3 & blackdog043,
thanks, you're both right, the ribs were right out of the package not trimmed and membrane not removed. I need to study up on that. My lovely bride said "no need" but clearly this is my project so I'll trim and remove next time. Also, I think I went too hot and too long (that's what she said!). Will shoot for the 225° - 250° range next time.
Tried regular soap and water to remove the soot drips without luck, so going to simple green next.