While operating yesterday there was an unusual sound? Several beeps, more like a honk, and then it stopped? (no shorts or other obvious problems) This is on a Digitrax Super Chief system. I shut down the power to the track and then turned off the system completely. Turning it back on, nothing seemed different, not at first.... Yes we have a mystery! The throttle on the DT400 now advances in 3's? 3-6-9-12....??? I have tried resetting CV29 to 06, but still this strange advance in the throttle? How do I reset it to 1-2-3-4-5-----??? Somehow having the throttle at 80 to move a train that normally runs at a realistic track speed at a throttle setting of 28-30 is disconcerting. And yes I have read both manuals and so far don't seem smart enough to figure this out. Consequently let me put this in simple terms, HELP!!!!!