The ML's have a different tone profile than most cabs, so it's natural that you may need to take a different approach to your amp's EQ, than you were using with your old cabs. My first recommendation is to give your ears a chance to acclimate to what these cabs are doing on their own. It's a very natural reaction for your ears to want to hear the tone they have been used to. If you need a little something different, I've found the vintage tone control on your bass to be very effective at changing the tone profile of the cabs. The ML's respond to slight changes in EQ very well and are capable of reproducing a pretty wide variety of tones, so you should be able to dial up just about any tone your are looking for. Keep in mind that it's always better to cut than to boost. For example, if you find the cabs too bright, or that you need more low mids, try cutting the upper mids, or treble on your amp before trying to actually boost the low mids.
Thanks for your commitment to tone, Roger.
My concern is not the top end, but rather keeping the extended low end of the ML112 under control