Anyone experience the Magnepan Tri Center

I have a pair of 1.7i's which I use for 2 channel listening and Home Theater.  I have the MGCC3 center, and a pair of MC1's. Currently using the MC1's for Back surrounds in a 7.2 system. I find the MGCC3  lacking clarity. Voices aren't clear, seems to roll off lacking highs. I am very interested in trying Magnepans Tri Center. I emailed Magnepan to get an explanation on how to set this up but was advised by Mr. Diller I would have to call. Unfortunately  due to a medical condition I cannot speak on the phone. I'm wondering if any of you are using this set up or tried it, or have any experience with it.  if so, maybe you could give me some direction how to set it up. I have a drop down screen which measures 109" wide, so the 2 flanking speaker would be fairly wide apart. any assistance or tips would be greatly appreciated. Thanks