After my motor was built, it only had the standard restrictors (RB30), First time on the track at Symmons, it pumped shit loads into the catch can.(3 litres in 5 laps)For that season, I just plumbed it back to the sump and got away with it. In 2010 I spun a rod bearing, and had to rebuild it again, this time 1mm restrictors went in as well as the VCT getting a 1mm restrictor, I also fitted 26 covers with mines baffles, now I don't get a drop in the catch.