Thanks Andrew, will advise dealer's name after picking car up from service.
Redmorgan, thanks yours. Up to 10 %? but when it is 10% then they could do better especially on car at +£45/-. Perhaps my experiences with Land Rovers/ Jags/TVRs/Minis has spoilt me for owning a Morgan. Lastly, with that I accuracy I will rely on the GPS which only cost £100, not Morgans speedometer