I acquired a B2910 that came with a RC72-30B MMM. The mower was used but had never been mounted on this tractor and does not have the brackets and linkage to attach it. My research shows this tractor typically uses the -27B mower but in parts manuals it appears the base deck is the same so I assume it will work. Before I spend money on the attaching brackets can anyone tell me if I should buy those the parts manuals show for the -27B or -30B? Some are the same but not all. Thank you.