csteffen, my old feeder was the same type but cause it was mounted on the dock I blocked 180 degrees of the opening so it would throw in mostly one direction. To offset possible clogging due to restricted opening I epoxyed a 5 inch piece of steel wire to the center of the throwing plate with a slight bend to vibrate the feed, it never clogged on me.
With the new feeder mounted on a tripod and no restriction on the feeder I'm going to leave it unmodified, if it clogs I will add the steel wire to the throwing plate because it does solve the problem. Another thing I would do is every couple weeks empty the feeder to make sure no feed had solidified around the opening.
I've read where some of the fish feeders with vertical throwing wheels sometimes clog, so I guess wet or humid conditions could be a problem with any feeder.
