I could not find a 622 anywhere near us. So bought a NOS Freedom trailer. Last year we pulled it about 9000 kms with no issues other than the exhaust problem we have. But the trailer is/was an excellent purchase. It may be smaller than the 622, but there is lots of room inside, we had everything we needed, as well as hauled a friends suitcase on a 18 day trip.
Now for those that don't know, the exhaust problem started happening when we did two things. One, we added a 7jurock 27" tall/flip windshield, and we added the trailer. I removed the windshield and that wasn't the problem. (I should say the problem is that my wife who rides as passenger is getting the exhaust fumes badly) Also, when we ride with the trailer empty, it doesn't seem to be a problem. But when the trailer is full, I am only guessing here, there is more gas being used to haul the weight, and the exhaust gets back drafted over the trunk and gets my wife. I have found a few other people that have experienced this as well. We have tried removing the side air wings and few other things, some help, but no fixes.
The season ended last year without finding a solution. (-16c outside today) I was not trying to hijack your thread, simply to state that I love the trailer, it trailers very well, and you forget it there, has a great storage capacity, but, for us there is an issue that I need to fix. Also, there is a good 2 part vid from a guy in Arizona on how to make the upright stand to store the freedom trailer. i made one, and because of my limited ceiling height where I store it I also removed the tongue, which came off very easy once upright.
Ray
(Edit ) P.S. the other thing is that the spare lock tumbler (if you got one for a trailer as I did) does not work on the freedom trailer