If the pump came with washers under the DV holder, you are supposed to remove them with the PDR DV's. I went to remove them because it appeared the PO did not, well my question is, is there more than one washer under there or just one. I removed a washer but cannot tell from PDR's pictures if it is the right one. It does not appear to be copper like they say so, is there supposed to be one washer left or none at all?

 

Ok, I pulled #2 and it is copper and mangled to heck. So I'm going to assume they are supposed to be removed.

 

Washers out, wow this thing never idled so smooth.

 

Yep you did the right thing.