Hello. I'm an owner of a 2006 Carver 56' Voyager and have been dealing multiple tail shaft failures on both Starboard and Port side. Prior to owning the boat in 2018 both shafts and propellers were replaced. Since owning the boat in 2021 have experienced 3 tail shaft failures. Item that continues to be discussed is the shaft length and the distance from the aft strut to the propeller hub (currently 4" and overall length of shaft is 2.25" x 122"). Failures are occurring at forward end of propeller taper and 4" aft of rubber cutlass stern bearing. Would anyone have the original design length for the shaft? Thought is that when shafts were replaced in 2018 incorrect dimensions taken and propagating the problem.