Enderle twin gear billet pump SG810

I acquired a Enderle SG810 fuel pump. It is the twin gear billet pump. I took it apart to check and lube it and I'm not sure it is together right. When I take the end plates off the removable gear plates are ground smooth to the cover side and the "natural" coated surface with the notches at the fuel inlet/outlet are to the inside. My guess is the ground surface would be on the gear side???? But then I'm not sure why there would be any notches??
I tried everywhere on the internet to find an assembly drawing...but no luck.
thanks

 

Got my answer !! Caled RBS and got Enderle's ph. #
The coated/relieved side goes toward the gears......the ground side is out. It is ground to set the gear clearance.