[Billy-O]

I dont know why you needed to start a new thread.

I believe a proper manometer is a better tool to measure and diagnose your problem than using a anemometer. I believe there are too many variables that renders an anemometer mostly useless.

However, I'll offer some thoughts off the top though i know little about the collection system..... Are you using the recommended hi lift blades? OEM vs Afternarket make a difference? Are they the right size.... maybe you could have blades for smaller deck (42" deck perhaps). Are blades right side up? Is the deck not clogged with wet grass? Is the deck not bent out of shape?