I assume you are referring to the X-axis cable chain catching on the limit switch. Mine was doing that, and I solved 90% of the issue by swapping the socket head cap screw with a button head screw. The rounded head allowed the cable chain to glide over the screw.
Since that was a kludge, I replaced the double sided tape holding the cable chain onto the rail with stick-on velcro strips. Using those I was able to position the cable chain a bit further away from the switch–hanging sort of half-on/half-off the rail. It’s still kind of a kludge and not as elegant as your aluminum angle method, but it works.