Build: Any Mode: Any SERVER NAME: sp/mp logical error Description: You can add another t1 shield to the structure , so you got T1 and T2 shield at one Structure In the BlocksConfig.ecf all block's are limited to their main block , for example CV Minigun and Cannons are limited to the BlockGroup "TurretMSProjectileBlocks" but T1 and T2 shields are seperated and 2 different block groups so thei have there own block limits . A solution would be to limit them to their class like, { Class: ShieldGenerator -ClassMaxBlockAmmount: 1 } Steps to Reproduce: 1) add T1 shield to a Base or CV 2) upgrade shield to T2 3) now you can add another t1 shield to the structure , so you got T1 and T2 shield at one Structure