hey everyone, new to the website, love it, I have a lesco ride on spreader that is leaving streaks in lawns. the spreader leaves streaks with the deflecter and third whole closed and open as well as spreading wide open. I have been spreading in both transport and app. speed. and still get streaks. The spreader only streaks beneath the unit(it seems like the fert is falling off the spreader wheel.) Anyone had this problem. Is the spreader not going fast enough ??????. Please Help.