Trying to locate an obscure 1911 part

[Gunmaster45]

I'm trying to find an Ed Brown 3.5" Officer's 1911 size guide rod. These are rare these days, because you had to properly machine the slide to get the rod to fit it properly. They make the slides operate smoother and tighter. But because properly machining a gun to fit a part is not simple work, they were discontinued like 15 years ago.

I'm trying to locate one to fit a Colt Silver Stallion Officer's size 1911 slide that has this Ed Brown machining done to fit this guide rod.

I've done some searching but have turned up nothing. Any help fellas?