hi,i have stripped many webley pistols in the past but the only one that gave me real trouble was a late model black laquered premier.i tried everything but nothing worked until i heated the assembly red hot with the oxy acetaline.this obviously destroyed the finish and the spring.the finish didnt matter as i was nickel plating the pistol anyway.not helpful i know but just relating my experiences.good luck with the job,greasemonkey