The bottom line for me is I own two Aqua Pro feeders and both constantly jam. I can deal with replacing timers, which I've done on three occasions, but the jams are tough to deal with. Its disheartening to visit the pond after a week away to find the feeders have been jammed all week.
Mine's been down for 3-4 months. When I call AquaPro, he refers me to the retailer, NaturalOutdoors. When I call the NaturalOutdoors, they refers me to AquPro! I'm going back to hand feeding. It's not as regular, but far more reliable in the long run!