Did a test today on my back yard, I did a single pass core aeration then applied only about 1lb of seed per 1,000sqft overall and a little extra in any bare spots. 8-9 lbs of seed applied for 7,500 sft Seed I used was Lesco metro mix, # 11 setting on Lesco push Spreader, holes not open much. I didn't check with key gauge but only #setting on the Spreader. During applying the seed at that very light rate, not once did the flow slow, clog or Not flow evenly or once did I have to bounce the spreader to make seed flow. Was only possible because of the Permagreen Breakthru Agitaor installed in this 80 lb lesco push spreader. Conditions were damp and misty also, no cover used on the spreader. Pict of the seed coverage, one spot in center of lawn, no extra applied to spot Will give update in few weeks how test works. My back lawn is pretty thick to begin with.