Thank you all for the input and insights. I have no idea when, if ever, the DP's were changed. If Bob Smith recommends 2500 hrs., that's good enough for me. There are about 4500 hrs. on the Hobbs meters at the present time and I DO have new DP's purchased a couple of years ago, as spares, from AD. Oh dear....Yet another maintenance item to be added to an already lengthy list.
As a side note, my maint.' list USED to be just one or two items but since some of you b*stards have posted pictures of your pristine ER's, the "LIST" has morphed into an item growing faster than the national debt!!!! THANKS A LOT!
Just looked it up. It's Mr. FlyWright's fault for starting the thread....WE are not amused...