An update: it was the mainspring
Ordered a Wilson spring kit. Took stocks and side plate off, removed the old mainspring and ??!!?? did Wilson send the right spring? Yes they did, the old one was practically straight in profile compared to the Wilson. In fact the Wilson looked short at first glance. It fit perfectly and the Snubby is smooth as glass, no hitch before the trigger breaks!
Sorry, no picture comparing the two mainsprings.
Ordered a Wilson spring kit. Took stocks and side plate off, removed the old mainspring and ??!!?? did Wilson send the right spring? Yes they did, the old one was practically straight in profile compared to the Wilson. In fact the Wilson looked short at first glance. It fit perfectly and the Snubby is smooth as glass, no hitch before the trigger breaks!
Sorry, no picture comparing the two mainsprings.