I went ahead and installed the awnings over the 2 bedroom windows and the couch window. It helped to know how the walls were constructed. I used the sikor sealer not sure of the number 505? it is not silicone and was recommended to me by camping World and a RV service centre. I used screws for the drip rail with a rivit at both ends. Not sure of the rivet name but it is the type for hollow walls. Used these same rivits for the arms and the awning hold down strap. I lay down a bead of calk first and then dipped each screw and rivit in the same calk to make sure that I had calk in and around the hole. This was in Florida and am now home in Ontario and the awnings are still in place. I also installed a Fantasic Fan in the washroom to replace the fan supplied by AS. Same size 14" so went in well. used the same calking stuff as with the awnings. I wanted to use the sikor self spreading but couldn't find any. When I do, I'll recalk the fan. Had a look at the roof while I was up there and it seems to be in great shape. All the seams and the vents,etc. seemed to have the self spreading/leveling calk and plenty of it. Maybe this is why I don't have any leaks in the roof area. We had a couple of real heavy down pours (Like 4 hours) on our trip home and passed that test.
Thank you to all who replied to my cry for help with the awnings.