It is not that many indeed. I used the latest MBSpectra.mzml file which i built according to this https://github.com/OpenMS/MassBankUpdate. The truth is, I am not aiming at a specific instrument but more like to a globally acceptable tolerance value. So i will tweak it a bit maybe.
P.S.: I didnt know how to update the MB2HMDBMapping.csv so I left it as it was https://forum.knime.com/t/openms-updating-mb2hmdbmapping-file-to-create-the-mbspectra-mzml-for-metabolitespectralmatcher-node/37097.