I cut roughly 6 acres, after I'm done cutting I spend about 30 minutes cleaning the grass buildup under neath. I don't cut when the grass is wet. Blades are pretty beat up and will replace them this week so I'm not sure if this is causing the clippings to build up heavily. Is this normal. I've got family who have ferris and they have no grass build up. Mine is the 3200 32.hp Vanguard with 61 inch deck