I have a 1992 250 V8 Evinrude, model E250CXEND. The engine runs pretty good but as it idles it sometimes loads up and then will stall but will start again without any problems and the problem is somewhat intermittent in that occaisonally its fine. Typically it will idle at a nice RPM, dont remember exactly where, and then the idle will suddenly drop. if its left to be, it usually stalls out. The oil and fuel lines at the VRO pumps were a bit wet so I reclamped and cleaned everything. Any other suggestions?