I thought there used to be one over in RI but he may have gotten out -- Joe Norcott -
http://btne.com/ - Have not kept up with him but think I met him maybe 15+ years at a Sage conference. Have not used him previously so just passing along the name.
Also maybe Michaela Senk-Eustace at Syllatrex -
http://www.syllatrex.com/ - am not sure how active she is with Act! though I do see her from time to time at various Sage events.
Of the two I'd try Syllatrex first -
michaela@syllatrex.com