WHat I've done is conenct everythign loosely, like Carl said, then spray some PB Blaster on the slidey parts (namely the housing to turbo surface), put it on the manifold; hook up the oil drain line (with a new gasket- straight RTV hasnt worked for me), and tighten it up, turning the turbo body as needed to line up the drain line squarely. Then finish tightening the turbo housing to body mounting clamps/ bolts. I've never scribed anything, Jay. Must be part of not knowing what I'm doing.....
Daniel