I just use my fl die with the expander and measure with my hornady case gauges until the shoulder is pushed back about .002. It's basically a partial resize and the neck gets done at the same time.
Continue to use your collet die until the issue happens again.
Yeah, thats what i do. Why people try to overcomplicate this schidt is beyond me. No one here has ever proven to me that they load more concentric or more accurate ammo by using all the fluff they do. KISS for fu cks sake.