CB's Dry Sump Pump

[big daddy]

A quick question for you GURU's out there in bug land, if I use the CB Dry Sump System in T4 would I have to do any clearing or is it just a bolt on? Any body has any problems with there CB Dry Sump Pump and what PSI does yours operate at / at what RPM??

The pump gears on mine in my T4 seems to score the alumium cover is this the norm or do it neeed some clearance? I pulled apart my pump to check for anything out of the normal and found mild scoring on pump cover.

Thanks in Advance