On my two month old reconditioned DeWalt planer, the DW735, the feed rate switch is stuck in rate 2. I've swtich gear before while the unit was running as recommended, and it worked fine. I tried again yesterday and it will go to the neutral position where it is between gears and feed roller is not moving, and it will go back to 2 okay, but just will not switch to feed rate 1. Any ideas?