I installed mine this morning - couldn't pass up the sale. I've had my MS3 for almost 2 years and can't figure out why I didn't do this sooner - I guess I needed the sale to hook me. Anyway, this is an excellent mod. Even after all the time with the MS3, I would mis-shift from time to time with the stock shifter - just too much arm movement. Now with the TWM, I drove 130 miles today mostly in the hills with lots of twisties - not one missed shift all day. My MS3 now shifts exactly how I want it to.
I also repeated one small mod that I had done to tighten up the slop in the stock shifter. The cup that the shifter ball sits in fits loosely in my car - you can almost rattle the shfiter. Anyway, I cut some pices of plastic to use as shims to put between the cup and the main shifter housing and now my shifter has almost no slop at all.