We've got a 2012 freightliner with the isl in it. Turbo actuator is starting to act up. I didn't know if we could get away with just replacing the actuator. If not, is a rebuilt turbo + new actuator an option or just go with all new. I suppose availability plays into it as well. Turbo has about 475k on it but has had free flowing exhaust after it since about 250k.