It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
Depends on the baseplate / boltdown location - are the mounting pads machined and level etc, a poorly designed base might require some shim to ensure the pump case is not stressed or twisted.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
Normal issue is that the pump is fixed in place by the piping connections so you don't want to start stressing that bit out to fix the coupling misalignment.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.