This a second posting due to a lost thread. I recently acquired a 1975 (when they made them out of real metal) Sears garden tractor (16HP Onan engine) with 48"deck and 46" plow. I cleaned the tractor up, replaced the battery, greased, changed engine oil and transaxal oil, cleaned gas tank & fuel filter, sharpened blades and adjusted carborator. The tractor now runs like new. The problem I am having is that when I mow the grass it does a great job but it does not shread the leaves (I hate to rack). Does anyone have any experience with mulching blades for a 48" deck (pros and cons)? Any sources for mulching blades (3 x 16.25" blades)?