Grendel,

When a new pump is installed, and especially if the cam+ lobe is in the 'hump out' position, it can be rather tricky to mash the arm down and seat the pump against the block.

I have seen folks use two long bolts with the heads chopped off as alignment tools. Once the pump and gasket are properly pushed up against the block, one alignment bolt is removed and the permanent one installed and snugged up. Then the same thing is done with the other bolt.

Sticking a new pump on seems like child's play, but it can be a pain in the rear sometimes.

Stuart