Fixing my Lori's Tube

It seemed like no matter what I did the bottom spikes in my Lori's tube rubbed through my skin. I finally decided that the problem was not in how smooth the spikes are. The problem is where they are. They were in a small ring leading into the cage. This is the smallest part so the spikes are always in contact with the same patch of skin.

So I gave up on them and files them smooth. It seems to have worked. After a week there is no sign of any irritation.