All A. H. Fox guns have the same design as SKB is sure but consider each trigger was hand fitted to mate against the hammer sear with only a little play taken up by the trigger spring. Also to mate against the safety slide with zero play when slide is rear. Tut's Fox worked out because triggers were returned to factory's set up and not switched. But his example seems to give assurance to amateur gun smiths that Fox triggers may be freely switched in 5 minutes with no other considerations or things to check and that could create an unsafe gun.
That could be true. This happened on two different Foxes where the triggers were switched. In both cases the guns were test fired to include the safety working manually with the triggers switched with no problems. Perhaps it was luck of the draw, but in both cases the smith switched the triggers back to their original factory position in 5 minutes. What I will say is in both Foxes the automatic safety rod had been removed.