Hello new to the forum  please  help  I have  2  Grasshoppers both 725'2  around  6k  hours  on them  each. The issue  is  that  the one has the  power lift  it had been replaced  5 times by the dealer because it stopped working. I  have been into it some  and  all the  gears  up front of the lift  arm are good.  it  just  rattles no up or  down  I am  guessing there is  a screw type mech .  behind the  front set of  gears  that  operates the motion. But I sort of  lost to find a listing for  parts or know why this keeps  happening. I read many  people that have had them  forever  and  no complaints about  this.