10 years aint bad Peter .
This is why I always seal them with silicon. Seals well, but can be reversed very easily.
V80s sure are a tight fit. I've generally used V40s, but recently squeezed V80s into a MkI that had failed.
I timed it up on my Vibrograf to 0.1s/day too. I think this'll be my daily wearer for a while.
Rgds,
Andrew.