I hadn't heard of a American Axle. had to look it up. they do seem to make everything. wouldn't surprise me if they make gears for all kinds of rebrands.
i hate alxe whine. that would drive me nuts. have you tried adding some Lucas? I've had that fix a very slight noise from a gear once.
I only put one Richmond in my car because it was very annoying no matter how I tried to adjust it, I could always hear it.
I have a TruTrac in it also and that dictated the gear oil requirements. I’m sure a lot of the noise is from the poly bushings I put in it as well.
