I'm having feeding problems on a 36" SORDZ. During feeding if "feed stop" is actuated on the console or if a misaligned sheet is detected, the first sheet at the head stops is not being halted in time to prevent that sheet from being partially captured by the primary grippers and sent through the press, most of the time mangled. At idle, shouldn't these primary grippers remain closed until paper feed is started? I've already replaced what I've assumed to be the componants that control the primary gripper action.( A pin and fiber shock dampener at the control arm of these grippers).