I just called my favorite supply place, Building Products for a delivery of 6 yards of organic leaf/mushroom compost. It was actually cheaper than regular mushroom compost. Delivery set for Friday.
I intend to spread this over my lawn to add organic matter. Every natural/organic lawn care book I read says 'add compost/organic matter' as a cure for everything. I've never added this much. It should give me about 1/4 to 1/2 inch layer on the whole lawn.