If it was the pcv, there would be alot of oil in the throttle body and intake tract. Hmmmmm...if you change your oil on a regular basis, I can't see it being oil rings . I wonder if those guys even changed the head.
.....why don't you try some engine stop leak for a while and see what happens. If it stops or smokes less, then it is possible the valve seals are gone.
[This message has been edited by Ver.III (edited June 16, 2000).]