Does anyone know how stiff the spring is on a Garrett T3 turbo waste gate actuator? Most says that the boost to open the waste gate should be around 10 psi, but if I stick a compressed air into the actuator port, the waste gate does not pop open till about 60 psi on the compressor gauge. Please advise if I'm doing it wrong. The engine is a OM617 on a 84 300sd. Thanks. ( If there is a thread for this can someone redirect me to it)