Got our RV back today from the dealer doing the warranty work. We both learned a few things about slide toppers and the anti-billow devices or lack thereof.
Dometic has the patent to the anti-billow device shown in one of the first posts. They do not fit on the Lippert slide toppers. Lippert does not have one of their own design.
Word was that FR is going back to using Dometic slide toppers.
In the end we had a new Lippert slide topper installed free of charge and FR said if it billows out again they will replace it with a Dometic brand.
I will give kudos to Poulsbo RV in Mount Vernon, WA. and Tom the service manager for all the work they did to make this happen even though they did not sell us the unit.
As an afterthought I went to google today and typed in "Forest River" "3051" and the third listing (campersinn) showed my 2017 model RV with a Dometic slide topper with two anti-billow devices attached both front and rear.