There is a FAQ link at
www.parkerguns.org that has a "Need a gunsmith" FAQ in its list that points off to a forum discussion about gunsmiths used and recommended by the forum members. If you are going to make recommendations for or against, I would ask that they be made on that forum thread so both positive & negative (respectful & accurate) information is shared. It would help us all to know how to find the best for our needs.
Thank you.