Timothy,
The settings in your manual seem a bit unusual. Typically, the chipbreaker is set below the cutting circle so that there is always some down pressure on the stock, and the pressure bar is set at the cutting circle, or slightly below in case of a spring-loaded bar. If the pressure bar is higher than the cutting circle it cannot hold down the stock as it exits the machine.
On my old Powermatic 160 the pressure bar is fixed with no spring and the height adjustment is a bit finicky. I actually fine-tune it while feeding stock through- too low and the feed stalls, too high and chatter ensues, just right and Papa Bear is happy. With a spring-loaded bar as on your machine it would seem that the bar should be a bit lower. It may be that you need to increase the spring pressure.
Have you looked at the manual I linked to above? content.powermatic.com › manuals › 1791267_man Is that the same as your machine?