ZD331P-60 550 hours.Tired of stopping once or twice each year to blow air through the fuel lines to correct the clogged issue. Additives are used to ensure there is no water in fuel. fuel storage tank is now inside. they keep finding algae in one of the fuel filters. they continue to tell me that everyone with this dual line fuel delivery system has problems - the filters are too small. Has anyone tried a larger filter or a water separator? Same fuel runs in a John Deer 950 and Kioti 40 HP tractor with no problems. Thinking about selling and trying a LexMark. Thanks