[P@blo]

Dragncar, your pump picture with the thick cast bottom plate looks like the countersunk holes were slotted to the right to get the holes to line up but could be just shadows. If there has been a massage, not sure I would be keen on that once going with weaker CI over steel is factored in.

Appears as though the Precision pump uses the thin steel plate. Not exactly clear on the rational for doubling up the thin steel plate either other than a feel good.