yes, youneed to loosen the soil and add gypsum to help keep it from packing so much. then reseed with a quality seed variety. most quality nursuries will carry better varieties of seed than a super-store. also, check out www.ntep.org for the latest in in top-rated varieties of seed.
you may also want to post your questions about soils on dirtdoctor.com. howard garret is a well known organic guru so to speak.