We used to have a 2003 Cougar 281EFS (Bunk model 5th wheel). That is the camper we traded in for our Axis:
There used to be a very active Keystone Forum (I think it was keystonecamping.com or something like that--don't remember now). I was as active, if not more, there than I am here (was on so much that they made me an admin). It was a very active site for Keystone owners. I've kept up with some of my fellow admins from there the past few years via e-mail. None of us were given any warning about the impending demise of the site.
Then one day the site just up and vanished; completely disappeared (this was before Thor acquired the Keystone brand). Since then I don't think there really has been a definitive Keystone forum site which may explain the lack of owners.
We were very happy with our Cougar--enough to keep it for over 10 years. Had very little trouble with it and very few issues when we first picked it up.
We just got tired of the combo being so large (over 40ft going down the road as you see in the above pic). My wife was afraid to drive the combo. She drives the Axis around like its nothing (even when pulling a car which puts us close to the length of the truck+5er..go figure ! LOL). She just feels safer driving around the Axis.
Have you checked to see if there are many Keystone owners on irv2?