I wouldn't be too concerned with a quart every thousand miles. My 2f burns a quart every 600 miles or so. Runs fine, doesn't smoke, compression is decent but not great at around 130-135 psi per cylinder last time I checked. I think a lot of my personal oil burning issues stems from the fact my truck spends almost all it's time running down the highway at 70mph at 2500-2700 rpm. That and I have been running 10w40 in it. I'm going to try 20w50 next time around. But I have heard that sometimes a fresh head can actually cause more lower end blowby. Happened to a friend on a 350 once. Nice fresh tight heads on a 150k lower end and all of a sudden it started using oil like crazy. Could have been something else, but it's a theory anyway.