Thanks for the heads-up on the caution against using TSP on glass...(who the heck reads the labels :( ) I didn't use TSP on my MH and my original plan was for the rear bumper and front cap but after the ease of prep and application and the awsome results, it was like eating peanuts: I couldn't stop. My sides looked good to start with using Meguires but I went ahead and did the entire MH. I have to say, it looks like it did when it was new, 10 years ago. I don't know where the fly is in the ointment, but this product works way better than any expectations I had.