Difference in tutorial results for metaphlan3

Hi @fbeghini
I was trying to use * SRS014476-Supragingival_plaque.fasta.gz this file on the tutorial as a control. I am getting a slight difference in the relative abundance percentage when I did it oon my PC. I have installed the metaphlan database automatically using the command provided on the wiki using this command: ```
$ metaphlan --install --index mpa_v30_CHOCOPhlAn_201901 --bowtie2db

I am attaching the profile that I obtained on my pc where Micrococcales is showing 33.8% abundance. 
[SRS014476-Supragingival_plaque_profile.txt|attachment](upload://atQ5o982zdS9kNGrAZmPObrhtW0.txt) (2.4 KB)

The other file named SRS014476-Supragingival_plaque_profile_metaphlan3.txt which I downloaded from your tutorial is showing Micrococcales abundance as 34.7%. 
[SRS014476-Supragingival_plaque_profile_metaphlan3.txt|attachment](upload://ugmHMPyci4Te7BlnqvSj1aRh4r9.txt) (2.4 KB)

I want to know what is reason for this difference?

Thanks in Advance
Saraswati Awasthi