Pick up my demond drives doubles from lay buy tommorow. I have been googling them and come across also in this forum that a second generation exists. Can any one advise the difference fron gen 1 - 2. I have seen some complaints about the direct drive screw hitting beater and understand that the drive shaft has had some changes in gen 2. Im not sure what is fact or fiction. Any help would be great b4 i pick these demonds up tommorow.