Reterminate both ends, changing from 568- to 568b (or vice Versa). Probably no change So then re term again swapping the brown and blue pair for the green and orange pair.
Crazy? Yes. Long shot? Yes... But it just might be a solution to your problem.
I'm Not an engineer, but I play one on TV. My handle is Tweety but I have nothing to do with the organization of similar name. I just had a really big head as a child so folks called me tweety bird.
