first things first, they are picky on what oil you run them on, they must be clean too. clean lightly oiled with a THIN oil like breakfree or CLP, most will run no matter what, then if that does not solve it try a new mag (colt NOS from CDNN) and finally call wolff and get a new recoil spring, IF after that does not work then find someone who will ask you right away what model it is and what series it is, All woodsman's came in one of three series, The first had the mag release on the butt, the second series was on the grip in the proper place like a 1911 and the third series went back to the butt. Ninety nine percent of the ones we ever saw could be fixed by the methods i discussed here. dirty sticky too heavy oil will slow the slide too much that it does not have the inertia to strip the new cartridge off the magazine and into the chamber, clean and lightly oiled with low viscosity oil will allow the spring to function as designed.