Thanks...& noted about the Tstat...

I have another question about the UTH's. I tried reading and re-reading and RE-READING how you placed the pads under the tubs. I may just be an idiot, but I'm not quite following everything. Did you glue a piece of cork board to the shelf underneath the tub cut the same size as the UTH, then stuck the UTH to the cork board? Do I understand correctly?