Make sure you are not pressurizing your crankcase in anyway. Don't hook up the pcv. Make sure you don't have the hose to the TB connected. Then see if it works better. Is your oil drain down hill the whole way?
I had the same stuff when I first built my setup.
97 Laser Red GT-248A Wingless model, Built Lincoln Mark VIII motor-Procharger D1SC, 3 core IC
2012 Black GT-Saddle, 3.73s, Brembos, Shaker1000