Problem solved! Recommended intermediate shaft and installed shaft were different lengths. Pump primed and fired up with more pressure than it's ever had at idle. I let it get to ~110 before shutting it off as I thought the pressure was excessive (it dropped once it warmed up). Per all the comments above; I contacted Milodon about the torque specs. I was told "Spark plug tight. Snug plus 1/4 turn." Also from the above comments; after following the Milodon directions, I spun the pump by hand with a screw driver and intermediate shaft with no gear. Next I spun it with a drill and monitored oil pressure. Several over precautionary steps in between and it's happy!

[Linked Image]Untitled by Greg Ault, on Flickr

[Linked Image]Untitled by Greg Ault, on Flickr

[Linked Image]Untitled by Greg Ault, on Flickr

[Linked Image]Untitled by Greg Ault, on Flickr

[Linked Image]Untitled by Greg Ault, on Flickr

[Linked Image]Untitled by Greg Ault, on Flickr