So I just got my 390 running in my truck, I pulled it to ring it. I havent driven it, heat cycles and blasts down the road, so the rings still may not be seated, but I am getting alot of smoke out the breathers. Even when the motor is off, for quite a while it will sit there and smoke out the breathers. Its not really smoking out the pipes like it was, and it runs really good. Heads are good, valve seats are good, and i used viton seals. Its got a solid lifter cam and barbell lifters. Could this be the issue, too much oil getting to the top end? Or is it most likely blow by? Maybe I just need to drive it, but I hope its not gonna have to come out again.