custom holster maker?

[Mr. 16 gauge]

Well, I'm a little disappointed in the current holster that I use to carry my S&W M39; it doesn't hold the pistol tightly (slides right out) and the loops are way too big.....I do like the gun, however, and would prefer to keep on carrying it. Does anyone out there know of a good holster maker who can make an IWB holster for this piece? It has been out of production for some time, so finding a factory produced holster is a chore!
Thanks in advance..........