I looked on line at "Bri Rus" domes (about 85 bucks ), others, etc. Finally called Fleetwood, the dome is 60, the putty tape is 12, the Alpha sealant is 10, and shipping puts it around 105, bout the same amt if I bought the Bri Rus dome. Fleetwood of course recommended the atlas sealant for the atlas roof and to use the dome they have with the putty tape. I may be a sucker but bought it.
I just pd 10 bucks for a tube of Dicor thinking I'd get the brirus dome, so guess I'll keep it and use it on my trailer and stick with the Atlas sealant for my RV roof. I WAY over analyze this stuff, but piece of mind using what Fleetwood recommended is worth a couple of bucks. I guess.
Thanks for the info.