To elaborate, I followed this pretty closely: cooking anamorphic on Vimeo
The only difference is I didn't remove the front element from the front enclosure. I cut the middle section of the Bausch & Lomb out. I wrapped the back element in a thick tape and mounted it in a Canon tripod collar for the 100mm macro. I mounted this tripod collar on a piece of threaded 15mm rod that belongs to my Gini Rig. I placed a 1/4" 5" threaded bolt through the 15mm rod and clamped the collar down with a small pipe clamp. I used several different rig pieces to place the rod in front of the taking lens. I spin the back element until all flares in the Live View appear horizontal. The front, larger element was a bit more tricky. I purchased this (http://www.ebay.com/itm/281126828459?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649) moved the bottom tripod mount up to the top to stack the camera mounting point a bit higher. The second tripod collar wasn't quite large enough so I cut the top 2/3s of the tripod collar out. I clamped the front element as well as I could and mounted it on the above ebay mount. I mounted all of this on my rig and placed it on some legs. I placed an LED light on a table, got focus, and began rotation the elements until both the light is in focus, and the flares are horizontal. Tada! Now I can slide the front element back and forth on the rods of my rig to get focus with the anamorphic and use the taking lens to refine the focus.
Edit: I also secured the cut tripod collar to the ebay mount with a pipe clamp to be sure that it didn't wiggle anywhere.