It didn't have leaks before. While the motor was out, I tapped up the 2 open holes on the hard lines, and reconnected them as soon as the motor went back in. I haven't ran the compressor since though. Barely ran the car ..

Which part is the "dryer"? The catch-can looking thing that I had to squeeze my radiator in between? (koyorad + flexalite fans make it a tight fit)

Andd the vacuum pump tool, where to hook it up to, the low pressure valve, or high pressure valve or somewhere I don't know about?

Thanks for all your help.