I understand the frustration. The change in timers fixed my problems. Call Feederman with AP and ask. The times I used 600 the jam appeared to be caused by the feed being to big (just the wrong size) and getting caught between the bottom of the spinner (thrower)and the port opening. When the wheel jams the opening (wheel area aka port aka the openig on the front of the feeder) fills with food and the wheel will no longer turn. A classic mechanical jam and not a motor , opening size , hopper or timer problem.