i just popped it off and replaced it under water - i cut a large wooden kebob stick into 4 pegs, unscrewed each screw, replacing each one with a peg, then i took the plate off and fed the new one through the pegs - I hope i didnt tighten these ones too much, i went until resistance then a quarter more turn - i think it was good that i did this because there were signs of rust in the hole that was cracked - and on the back side of the plate there were spider cracks on all four holes. Honestly, i feel like this plate could be better made.