"croy" wrote in message ...

After battling a couple of GFCI circuit ocasionally over a
few years, I discovered something interesting. If I put
both GFCI breakers on one buses, they both stay on. If I
put both on the other bus, they both pop randomly after
anywhere from a few minutes to a few months.

I'd be interested to hear any insights anyone here might
have on this.

--
croy

Without checking system I will say you neutral is screwed up.
Check ground and neutral that are not reversed.