55.2-59 57 Chevy pickup radiator questions

[Donowprod]

57 Chevy Pickup Radiator Woes.

I have been struggling with small leaks in the top seam of my radiator for some time now. Since I live in Long Island, Ny radiator shops are almost non existent and the ones that do exist charge a premium. One shop refused to even try to braze it and wanted to rebuild it for around $800.
I eventually found another shop in Brooklyn, and the old man there brazed it for $70 and it’s been good for a few months, until I just recently noticed a drop of antifreeze after I shut off the engine.
Is it worth fixing again? I have attempted to purchase a few radiator in the past but none have fit rite plus Return shipping kills the deal cause most carriers want at least $80 to ship back.
It seems that my “I believe to be original” radiator’s mounting brackets are welded to the radiator at a gradual angle. Both radiators I bought the brackets we’re straight which caused a problem with the fan touching towards the bottom. Where can I purchase an exact fit radiator and be done with this or should I just rebuild mine with new core?

Thanks in advance!