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The auto guide assembly includes a guide palm or guide paddle, to contact the front edge of the felt and monitor its position. One or two air bags or air diaphragms, to control the position of the auto guide roll end, and a bleed air valve to control the supply air flow to one of the air bags. The air bag that is affected by the bleed air valve expands or contracts to move the auto guide roll and with or against the direction of felt travel. A second airbag or a spring is set up to provide a constant positioning force opposite the first airbag.