This post is long, but there is a reward if you can make it through to the bottom! I'm going to address things in addition to the slide issue that we are having worked on and a few things we learned today.
Today was our meeting with Mike Hums from FR - the rep for the FR3. I have attached a picture showing all of our smiling faces. It was a really fortunate set of circumstances that let us meet with him and we learned quite a bit about the RV without having to go the factory.
Mike was genuinely grateful that we took time to show him around our RV and talk to him about what's good and what's not so good with the FR3. He was very receptive to our feedback and was open and honest about some of the flaws that they have had to work out as they go along.
I have to apologize that my post may not have the techy info you are looking for but a lot of what he and the H talked about went over my head. First of all they are aware of the problem with the slide motor/gears and have been working hard with the mfg to get it resolved. The replacement motors should not have problems with the teeth breaking (it has something to do with the metal that was originally used for the gears. Our replacement motor was to have been shipped the latter part of last week but unfortunately did not arrive today so we were not able to bring the RV home. From what I could see, you can't just replace the gears as they are inside of the motor housing - so the entire piece gets replaced. He also showed us how to get to the motor in case we need to operate the slide with a drill.
For everyone who has been trying to figure out a fix for the bed, they have designed a new mattress which looked really nice. The bottom 40 part has about 2 inches of wood installed in the bottom so that it lies completely flat on top and then when you fold the mattress for storing it, the wood is inside so it folds along with the cushion. You can order the mattress but it's close to $1000 and we are going to be happy with sticking a few 2 x 4s under there for support. If we wind up spending a lot more time in the RV we might consider the new custom mattress.
In other forums there was talk about wind noise. Our unit does have a problem with the windshield not being sealed into place properly, so he instructed the service guys to request the special silicone that they need to secure it into place. This should make things quieter in the cabin for us.
When I pointed out that the shower walls are not sticking to the wall completely he told me that they should not be stuck on all of the way down. If the plastic were to freeze and it could not flex, it would crack.
He also showed us that the best way to spin the passenger's captain's chair is to pull it all of the way forward first. That made it turn really easily.
So, now for your reward: Mike stressed to me that he really wants to hear from the owners what's going on with the RVs that are out there. He not only gave me permission, he encouraged me to post his email address and phone number on the forum so that you can all reach out to him for support on problems. Here is his contact info. Hopefully the forum won't delete the post because it has his contact info.