Oil in intake, help needed

Hi, got a problem with blue smoke at 2-3k revs and higher. Have just done full engine repair, all the gaskets, rings and bearings are new, also valves, stems and lifters. When idling, everything is good, right exhaust smell and everything. But after even very easy drive it smells like burned oil and light blue smoke comes from back pipe. Also noticed some oil in throttle body and intake. How does ACE-s crankshaft vent works, is there any valve somewhere or is it just the tube from block to air filter box with oil catcher at engine side? Could this be a reason for the blue smoke? Thanks.

Forgot to mention, engine runs well, no starting problems and crank vent tube and airfilter box are clean and dry. No oil leaks of any kind. Anyhow, i cant get it thru the inspection, if the exhaust gases are'nt right. Any other things causing blue smoke?