Many others are able to make the fatip works. Not me 
After trying a number of times, I still get irritation. I enjoy the more aggressive R41
001_tt1
more, and able to get irritation free shaves with it. Additionally, I didn't like the limited range of angles fatip permits.
I happen to have a very mild and old gillette OC which was not getting much love.
Today I had an eureka moment and decided to pair the fatip and the gillette together: top cap of gillette on fatip.
Results: effective and smooth shave with BBS for the first time!
Here is my "fallette"
with R41 handle:

Notice how gillette cap reduces the blade exposure

After trying a number of times, I still get irritation. I enjoy the more aggressive R41
I happen to have a very mild and old gillette OC which was not getting much love.
Today I had an eureka moment and decided to pair the fatip and the gillette together: top cap of gillette on fatip.
Results: effective and smooth shave with BBS for the first time!
Here is my "fallette"


Notice how gillette cap reduces the blade exposure