Paul,
If you do go to British Auto Specialists, please let me know. I bought my TR3 from them 16 years ago and six years later when I visited the USA Jeff, who ownes the shop, organised a car for me to purchase, arranged for me to take a Texas Driving Test and let me use his shop to service the car. He also treated me to several beers and a meal out! That's what I call good after-service. Check out their web site.
Nick