why is an option offered by Kubota so hard to get? I want to add factory dual rear remotes, the brochure shows it but the parts department can't tell me what to order. I have a 2014 B2650 with a cab. I believe it takes B7304, B7305, B7316 and B7317 kits to accomplish this but they are around $1500 so I want to be sure before ordering. My local dealers say those parts don't exist but found them online. Can someone confirm they are what I need to add rear remotes.