I'm a little late to this party
but have a question to ask.
Did the pump ever loose prime and run for an extended period?
If so, the threads on the M?A on the effluent side of the pump may have warped
Also, the shaft seal in the pump may have been damaged, look for a drip under the pump/ motor interface.
Did the pump ever loose prime and run for an extended period?
If so, the threads on the M?A on the effluent side of the pump may have warped

Also, the shaft seal in the pump may have been damaged, look for a drip under the pump/ motor interface.