is there anyone that modifies audible illusions?

i have an audible illusions 2d. i have always enjoyed it, but am interested in modding it. can anyone recommend someone that mods them? also, can anyone give a comparison to a 3a or 3b? i am hoping to improve the imaging and soundstage as well as reduce the tiny bit of glare/grain in the upper mids. strong violins for instance tend to sound harsh and cause me to wince a bit. i am running a set of 6922 type3 from upscale audio. i was recommended to step down to the type2. i will try that as well...