Originally Posted by
rpenmanparker
In case it isn't as explained above but due to some other reason, and you are using aluminum bolts, switch to titanium. And don't overtighten them. Use thread locker instead (aka Loctite).
It's not the bolts, and if it were, then steel would be best.
The key is the precession which underlies the entire issue.
A thread locker will prevent loosening, but the OP will still hear the creaking as the rings shift with the change in load direction.
BITD the makers of top end equipment held such close tolerances between the rings' inner circle and the crank spider shoulders, that the rings almost had to snap into place. That's why bolt loosening on good stuff wasn't a problem back then.