Reading in another forum the Scag 48" cut ZTR's (tiger cub's) are having problems with the belts breaking. Any repair tec's have a comment on this? Getting ready to by a ZTR and found a deal on a new 48" tiger cub with 19 hp Kaw but wonder if this is why 05"s are still available from Scag. Also herd that a service bulletin was out from Scag on this issue. Know what is says?