no idea if this is fixed in GT7 or not, but the nano/quark armor has actual armor points now

kubejs/startup_scripts/main_startup_script.js

@@ -22,6 +22,7 @@ ItemEvents.modification(event => {
 	registerBeneathItemModifications(event)
 	registerConstructionWandsItemModifications(event)
 	registerCreateItemModifications(event)
+	registerGTCEuItemModifications(event)
 	registerMinecraftItemModifications(event)
 })