Sorry I missed this thread - did you already get the work done?

If not, or for future reference, Everett Transmission on Ferry Street in Everett is a great place for any transmission work. They have done many jobs for me and other family members and they are always fair, reasonable priced and they guarantee their work. I don't know how they are for warranty claims since I never had one - great guys, great work. Small shop but they hustle.

http://www.everetttransmission.com/

I am not affiliated with them at all other than they are in the city I grew up in. I have done business with them for well over 20 years.