Dave you should have said you are in the UK. I'm not local to any part of the UK any more but you should be looking at

FEDERATION OF AUTOMATIC TRANSMISSION ENGINEERS: Automatic gearbox repair find members for repair Fedauto for someone in your area who knows what they are talking about.

More tips are given here

http://www.honestjohn.co.uk/faq/automatic-transmission-specialists/

Trust in the John - the Honest John!

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!