I am trying to determine which spindle assembly will fit my 2005 Super Z, model 926766, s/n 05041934. In the downloaded parts manual, there are two separate spindles listed: p/n 796235, to be used on mowers with serial number prior to 04032000, and p/n 350595K, to be used on mowers with serial number prior to 05011098. If I follow this information, neither spindle assembly will fit my mower, because my serial number (05041934) is after 050110098. Please advise! THANXZZZ!!!