4.6 northstar and the water pump keeps blowing the seal replaced twice on 1994 Cadillac Seville

I replaced coolant cross over gaskets and water pump gaskets and seal and every time it runs and starts to build pressure it starts leaking

Asked by for the 1994 Cadillac Seville
You got the correct insallition tool? ... Pump seated properly?
Yeah i bought the tool and as far as i can tell its seating correct it wasn't leaking until i pulled the crossover is there anyway you think i could have messed up the pump
PINPOINT the leak... remove whatever is necesssry to inspect for damaged gaskets, seals or parts. That's all i know you 'can' do at this point!
Thanks ill see what i can find