I found a YouTube video that recommends interior wood glue. Glue alone works okay but is prone to chipping.
Combine layers of wood glue with paper (I use a thin brown paper that a beer is slipped in when purchasing from a gas station).
First allow tail to wear down slightly.
Squeeze out a thin strip of interior wood glue across the worn section of tail, spread with finger, add a strip of paper (1/4" wide or so) on top of the wet glue, shape by hand and let dry.
Sand if need be.
Repeat if need be.
Wears down just like wood.
You're welcome