You could get Alistair Inglis's ( Omega carrier to enlarger registration plate. This has pins installed to allow the negative holders to be removed and installed in the same place. It's very useful for masking work. It also mounts above the existing plate, so if it's a little bent it won't matter.

I have one that I am going to be selling. If you want it I'll part with it for $75. If you are local I can sell you a whole D5XL for not much money. I'm in NH. Where are you located?