Thank you Roger.
Here are some photos before and after. There was considerable material stuck on the couch and I spent a lot of time removing the debris via step 1 (cleaner, eraser, scrub brush). Then did degreaser and all looked good. Next I used the acidifier but the stickiness I found never went away. After drying I used the sandpaper.
All felt smooth, no debris but it was still sticky.
Then is used crosslinker with the bicast as per instructions and left overnight.
Still sticky.
Finally I used the protector-b, still sticky.
Thank you for your assistance,
#1
#2
Rob