I had the same results as Tom Garver. I have a 1924 Ideal Grade LR/WF with the HOT and ejectors and is in very high condition and looks to have been used just a little. I tried what David said... Fired the right barrel and could not return the gun to SAFE manually; I was able to then lightly push the trigger forward and put the gun on SAFE..This same procedure also worked if I fired the left barrel first.
My gun WOULD NOT fire when in the SAFE position as John Brownell experienced.