Whatever works for you, different perspectives are a valuable part of the list. The antenna sections have a wiping action as they telescope, this tends to remove any collected grime but leaves the film of lubricant. I also WD-40 lock cylinders, have done so since before the first D was born and have done the same to my unit, the lock cylinder was difficult to operate. Works fine now, if it acts up again it'll get another shot. Les Trevor L Johnson wrote: > It is not a good idea to put oil on any object that friction can damage, > and is in an area prone to getting dirty. [quote snipped by moderator]