I am not sure what variant model I have except that that up on the lever is "safe", middle position is "fire" and down is "decock". When I first got the gun 500 rounds ago I learned either by experience or on this board that I needed to move from "safety" to "decock" to get it to actuate. Now after a cleaning, the gun is very hard to "decock". I have tried to lube the plate to no avail. Since it happened all at once, it has to be related to the cleaning. Any ideas??