Recently had a Waterman 400m Sprint Pump flowed (at great expense here is Australia) and found it was no longer in specs. I have since bought and installed a new set of gears and spacers and now the pump is all but locked up and takes considerable amount of effort to turn with a wrench. Is this normal for a new or rebuilt pump?

I am concerned that damaged may be done if I install it like it is back on my engine??

Any knowledge or experience with similar issues would be greatly appreciated.