Is the fly broken or stuck??? On my flinters, you just remove those 2 screws on the back of the lock and you can get to the fly, no need to remove the hammer...In fact, I have had one lock since 1977, have dissassembled many time and never removed the hammer...

As I mentioned, my lock would drop to half **** several years ago and I found out it was in the set triggers, not the lock...