I have a Cub Cadet LTX 1050. I have installed commercial grade mulching blades and the mulching plug on the mower deck. It does a terrific job of pulverizing the leaves into powder when the leaves are spread thin. But, if the leaves are more abundant or thicker, the deck leaves a narrow row of intact leaves in the center of my pathway. A second pass over these will achieve the desired clean lawn look. The blades are sharp, the underside of the deck is clean, and I have tried different deck heights. Is there a solution I have overlooked??