Just swapped over to a sti booster and mc in my legacy gt. Did all of my research, got the correct check valve and placed it in the legacy vacum hose. As i drive the car, the brakes progressively start to drag worse and worse to a point of almost total lock up. I dont know if anyone has delt with anything like this. Any ideas on what it could be? I could rule our brakes need bleeding and check valve orientation. Apparently it not the booster according to a test i read about online.