I got out some coarse steel wool and cut /tore it in half. I got an old bowl, pored some Acetone in, dunked the steel wool in and started rubbing, turning the steel wool and adding Acetone as needed. When the steel wool was full of glue, I squeezed out the Acetone and got a fresh piece. I did a section at a time, wiping as I went. A few stubborn spots took a second time to get all the glue up. This took about 25 minutes, 45 to get to this point.
A 100psi air hose to get in all the corners and cracks and a final wipe with Acetone before paint. A coat of black hammer finish paint took care of the rest.
Look what came in today (Sat)!!! I just ordered them Wed night!
AND
I started by covering the area with tape and marking out the layout.
Drilled a hole to get started.
Measure twice, cut once.......