We recently ordered the cable release kit with plans to put it the 135 I had purchased some time ago, but didn't realize the instruction included with the kit and online did not apply to the 135. The (very time consuming) installation process continued and we noted that the fixed round body of the mount contacted the movable shutter when mounted and the post head (that is on the end of the release mechanism) did not seat very deeply into the movable shutter when you added washers behind the mount.
We used our Dremel tool to grind some of the round barrel to allow access for the shutter mechanism. Things seem to work well (with a minimum number of new holes), we used the one hole already there to attach the movable shutter. We did not notice the offset mount of the cable release on the deluxe 135 (and the instructions did not refer to it either). Ours looks nicer and works well,
without seeing the holes (from the old mounting location).