Just a few bullet points in another direction on this thread for consideration
1. I have a new RTV X-1100 C and have not heard the thump, the RTV is presently at the dealer getting hydraulics modified with an auxiliary pump and a cooler added as well as UTV Hitchworks 3 point setup and snow plow, I live in the Pacific Northwest and snow is not an every year show stopper like some parts of the country but have a home where 5 miles of road may have to be plowed to get in or out made for justification for this RTV purchase.
2. I also have a 2005 Yamaha Rhino which goes faster but has a lot of bucks spent on aftermarket work, I would be surprised if there actually is a bone - stock ATV / UTV out there which brings me to the point below.
3. The aftermarket world is there because there are always improvements that can be made and sold to a willing public who wants to go faster, stop better, ride better, etc., if Kubota does not see the flaw in their thinking that this "problem" is something that consumers will accept then likely some forward thinking suspension company will pick up on it and come up with a fix and sell it through Kubota dealers as UTV Hitchworks does now, they offer aftermarket solutions to Kubota parts cheaper and sell through Kubota's network of dealers. As a compliment to farmers everywhere including those on this forum how many farm machines stay bone stock? The engineers coming up with ideas for these machines likely were not farmers first who used one and then put pencil to paper.
4. My personal plan is to wait it out, I did not have a trade in to get back, the Yamaha Rhino is not capable of doing what this "flawed" new RTV can do, my Kubota tractor has no cab, dump box so this RTV fits my needs, I do have a great dealer who only has Orange equipment on his 2 locations and RTV's are a big part of their business, they are used extensively for orchards, tree farms, nursery's, those customers will definitely wear out those suspect parts sooner than I will and make a difference in Kubota thinking.
Hopefully those new owners on this forum that are trading back do not get burned doing it.