It could be a good idea to disconnect all the lines and clean them out , change the fluid ,and see how you go . It is cheaper than replacing the pump ( 175 for a reco unit ) . It might be a blocked line ...

Hmm.. I have 343mm x32mm front rotors, 4 spot outlaw billet aluminium calipers (just fit unda 18's), 300mm rear rotors with brembo twin spots. Green stuff pads, wilwood bias adjuster and braided lines to reduce hydraulic flex. Mine stops fine. But then I use a sledgehammer to drive nails. lol.