This sounds like one of those situations that I've seen many times over my life. One problem happens, and during the exercise of fixing that problem, something else happens, then something else. It always seems to be with only one person, and others go by without a hitch. Weird when that happens, but it does happen.
I wonder if it is the fault of the carrier, after all, they had the
loader for quite some time, and probably shipped it in several different trucks. Probably scraped it up in the transfers.
You did the right thing responding in the negative, in my opinion as to your satifaction with the "fix."
I also agree that simply swapping a good loader from another tractor on the lot would be in order. It's amazing sometimes how one just can't see the obvious, and seems your dealer is difinitely one of those people who is going through life unable to give an accounting of himself!
As to Kioti waiting for a response from the maker, that's most likely the case. The same thing happened a couple of years ago with tires. Well, not the same, but tires were not available for a while. That was due to the tire manufacturer (titan tires) selling to all the major brands. Those with larger sales (kubota, NH, Deere et al) were getting their orders first.
Taesung, the maker of the loader, has to engineer this fix. Kioti can only wait on them to do the work. I wouldn't expect that to happen quickly, as R&D is not something done on the quick. I agree that some sort of notification to owners of these loaders is in order, and that's where Kioti is falling down on the job in this instance.
John