friday night, late at nigtht, middle of nowhere, have to open up a system, lets say heat pump split, no drier to replace old, so you throw on the vacumm pump get it down to 500 microns and lets say it sits at 560. no leaks, no moisture. what would the new drier have achieved (other than maybe 60-100 microns). was anything lost on this job by not having the new drier. proper evacuation was met. any constructive input appreciated.