WTB Longines Cal. 21.29 pocket watch Detent screw

Looking for a part for my Longines Cal. 21.29, 17 jewel, adjusted to 5 positions pocket watch movement. The Detent screw my watchmaker found snapped need it to finish the service a hard part to find so if anyone has a spare detent screw for this let me know. If you don't have one but know of a parts house that does let me know. I am about to pay someone to make the part as a last resort but that's not cheap would rather have an original part. Any help I would appreciate it. Knew when I bought my watchmaker might find a problem and he did.

Don't need the part my watchmaker sorted it out.