Wow, quite the thread Bob! Did you ever get everything all sorted out? I guess i feel pretty fortunate with our BX23s. We bought it brand new in 2017, ZERO issues or problems from day one and its still in perfect condition to this very day. Our dealer was wonderful, and still are. They`ve been very good to us. Only thing we`ve seen since we bought ours, is that Kubota issued a recall on the radiator reservoir tank cap due to seeing some tractors having over heating problems. I guess some didn`t have the hole drilled properly within the tank cap so that the coolant could pass thru back an forth. Kubota mailed a new one to us, but after looking at my original one when the recall came out, the hole was clear in our tank cap, so i saw no reason to put the new updated cap on, which is identical to the original one. So now i have an extra tank cap sitting in my tool box. After looking these tank caps over, i can see with how they are made, that some probably got thru without the hole being checked for blockage from the plastic molding process. A simple drill bit will fix them. Remove the cap, run a drill bit thru the hole, a blast of compressed air to clear any debris, problem fixed. Our BX23s has been wonderful. I did put a full width rops lightbar on ours, added a rear work light. I also bought the aux fuel filter kit from botaproducts and installed it to get rid of the little fuel filter under the tractor. That alone made life easier when changing the fuel filters out once a year. At my age, i hate to be crawling under the tractor to change that tiny little fuel filter.
I also have a thread somewhere in here where i modified a JD420 54" blade to go on our BX. Many told me it wasn`t possible to do. Well, it is, possible. I just couldn`t see buying the Kubota blade when i knew i had a JD blade sitting in my garage doing not much of nothing from my other JD420 tractor. Now i`m able to use the blade on BOTH tractors now, if i want to, lol. Just a matter of switching the hydraulic hoses on the blade. I bought an old JD420 frame from a JD junk yard, cut the front section down, and it bolts right up to the front of our BX.
Anyway, i hope your tractor has been all taken care of and is running well to your expectations.