Hi,
please try to define the atomic positions with more figures.
This is important for 1/3 and 2/3 fractional coordinates.

CRYSTAL
0 0 0
164
3.186 4.653
3
27 0.0 0.0 0.0
1 0.33333333 0.66666666 0.4134
8 0.33333333 0.66666666 0.2128

I hope it helps.
Giuseppe