Hi All, I had cracks in the vinyl where the columns attach to the sides of my pup, and so the particle board basically disintegrated. My question is when I put it all back together, I want to either replicate the caulking/adhesive that was used, or something better. When it came off it looked a lot like plumbers putty (20 years old but still pliable). I’ve read on this forum people use marine caulking/adhesive. But which one? Also, if I were to replace the curtains, what do people use for the back of the fabric to make the shades darkening and provide some insulation? Thank you!