Version 1.07 of Small Systems has been uploaded:
http://www.captainkwok.net/balancemod-extras.php
It now includes data file changes made in Balance Mod v1.19g. The correct order of installation is to install Balance Mod v1.19g first then extract the contents of the Small Systems .zip file to your Balance Mod folder.
I also correct an error in the movement values for Small Ion and Contra-Terrene Engines, which made fighters move slower than ships in combat.