A couple of excellent sources for general gunsmithing your Fox:
Paul Fuch La Barge-Harkness Alton, Ill. 618.465.7247
DavidNorin@aol.com (847) 662-4034
c/o Schranks Smoke n Gun 2010 Washington Street
Waukegan, Il 60085-5132
You might, however, get the choke/chamber work done more quickly by Mike Orlen:
79 Salem Street
Amherst, MA 01002
(413) 256-1630
michael.orlen@verizon.net
http://members.aol.com/sgunbore/brochure.gifPlease let us know how things work out for you and again, welcome to the Sterly Society