Mirage M7si bass bump how to deal with it?/

I have a pair of Mirage M7si speakers which are very good but have a bass bump that is hard to get rid of via the usual methods The speakers were reviewed in Stereophile and received very high marks but the reviewer had the same issue. Should I try stuffing the ports a little?? I know this helped with a pair of Polk LS 90s that were very bass heavy,. thanks
I am comparing the Mirage units to Def tech BP 20s and Infinity Kappa 7.1 series II (very impressive also)