Hi Reynard,
Wow! One, EGT, in four , 25% loss, compared with my 50% loss (1 in 2) .
Unfortunately my Dyone "yells" at me when the EGT (or anything else) is exceeding preset limits or gone RS - very disconcerting, especially in the landing phase. Can turn off but returns a few minutes later.
Wet and very windy weather, has given me the opportunity to replace the (assumed to be) defective EGT prob - yet to fly. Will advise, if remedy correct, in due course.
Forgot to mention: Hobbs 230 hrs, so EGT defect not out of line with many other reports. I would have thought technology would have delivered a longer lived prob by now.
π