The "rate dial" on the front. It's held on by cheap plastic clips. Eventually these plastic clips snap off (break), so all of a sudden you're putting out tons of fertilizer, and there's no way to predict when this will happen. Photo shows this white, round, plastic "dial" in front of the spreader. These things "break off" on both our Spyker push spreaders as well as our stand-on spreader/sprayers. This is a huge flaw IMO. Can easily cause turf burn due to excess fertilizer. We now carry a spare in each truck. Anybody else have this issue?