@miacasa_2000 @Scotty Hutto Scotty and I finished up his beltline yesterday. It is definitely a time consuming task. Here are a few recommendations, hope this helps.
-Make sure to use some kind of scaffolding. We used a scaffolding by metaltech, model number: i-ciscas. Dimensions are 29 inches by 73 inches and holds up to 1000 lbs. I am going to get two for when I do my beltline. If you google the scaffolding, it is on sale at northern tool right now for 199.99. You can get 5.00 off for entering your email address AND if you use rakuten, get 3.5% cash back. NOTE: when climbing up the side to get on the scaffolding, it is a little wobbly, however, when you are standing on the platform, it is nice and stable.
-Definitely work in small sections, we did 6 foot sections at a time. This made it very manageable AND you wont have to worry about stretching.
-As @throgmartin mentioned and recommends, use the stainless steel rivets AND proflex RV caulk.
-When you pull away the vinyl cover that goes over the beltline, MAKE SURE to clean / scrape off ALL old caulk. This is the most time consuming / tedious part of the process. We used plastic scrapers, a knife, solvents to loosen the old caulk, etc. When using the knife, be VERY careful NOT to cut into the vinyl beltline cover OR the paint on your coach, take your time.
-After you get all the old caulk off, make sure to wipe down all surfaces with denatured alcohol prior to putting the new proflex back on.
-When installing the new stainless steel rivets, FIRST drill holes in between the existing screws, THEN install the new stainless steel rivets, THEN remove the old screws, THEN proflex over screw holes and rivets, THEN put vinyl beltline cover back over beltline.
-When applying the new proflex, wear rubber gloves as proflex is hard to get off, you can also put mineral spirits on your finger to smooth out your proflex if your bead wasnt applied the way you like it.
Hope this helps. These are some recommendations that stood out in my mind from yesterday. I will probably have a new video shortly from yesterday that will give you a visual of what was done.