The cocking bent (face) of the cocking piece is at to steep an angle, and the trigger pressure required for the sear to slip off the face of the cocking piece is to low.
Peter Laidlerhas written up a detailed explaination of getting the proper two stage trigger pull off sorted.
Hope this helps.
http://photos.imageevent.com/badgerd...arts%201-3.pdf
Military Surplus Collectors Forums
Military Surplus Collectors Forums