Well, I executed Plan-A this evening. On the way home fromwork I stopped at the sporting goods store and bought a big erosol can of Gun Scrubber and a small aerosol can of Hoppes gun oil. After supper I removed the grips and took the can of Gun Scrubber and hosed the heck out of the inside of the frame, sticking the nozzle of the can up past the mainspring, down the hammer slot, up past the trigger, and in through the hand slot and the little hold in the recoil shield where the little stud on the cylinder latch protrudes through.
I had placed some paper towels down to catch the effluent, and when the flushing operation was done there were some black and some shiny specks of metal visible on the towels.
I then used the aerosol can of Hoppes oil to hose down the inside with lube.
The results, so far, are encouraging. The slide for the cylinder latch seems to move back and forth more freely, and so far I have been unable to get the latch to hang up in either direction as i could yesterday evening.
There is still a slight hesitation when opening the cylinder, but one must remember that, even though the cylinder latch frees up the rear of the cylinder, one must still overcome the spring-loaded catch at the crane.
So far I am chalking this up as a success, but in the long run only time will tell.