Hi , this is not nice to hear .I will try to help you out in any way I can .I think that the upper pointer is stuck due to a mechanical problem , the post handles the packages very hard and this musty have caused this .I still have another bottomplate , that is no problem .And I do can provide a shematicBut I will be at home next week , so I only see for the shematic next week .I hope this is no problem ?Greetings ,vdmradios