SUPERCHARGER= OIL LEAK

So the leak happened at idle or did it show up after a drive? Your correct that now your boosting the cylinders and there for a small amount gets into the crank case when in boost but there should be no boost at idle. What how is your PCV set up? Could the leak be from the return line to the pan?
At idle & reving it up alittle I was tuning the carb. I found the leak from a loose lt rear pan bolt. I started it several times before the sc install. I took the PVC valve out. I was toldi didnt need it. I contacted a friend who is a engineer & knows all about superchargers. He told me i need to install a catch can with lines coming from the valve covers.