Thats what I mean, and yes this should be done over the life span of the damper. I know from years back that adjustable dampers if not reset from time to time sort of just don,t proform as well after a year or so, I think they just start to wear out faster in one area if they are set in the same place for too long.It was SOP to change the settings from time to time when i was in the USA, can,t remember the full reason but it was best to do so.
