Agree the Kubota TLB series are great machines. WSM is your best friend to properly maintain and troubleshoot.
Here the tractors are built in Japan. Wheels, tires, loaders, backhoes are built in the imported country US or Canada with some slight variations. There are probably some exceptions. Had a Canadian built FEL and cab the local dealer didn’t recognize. Have a M59 backhoe from Canada that is like the US made model I hope. Point is it is a guess who may have made your loader to Kubota spec. Good luck and hope you can resolve to better meet your needs.