Thanks for the responses. The ones I tried after firing one barrel and pushing the trigger forward I was able to put the safety back to safe. Pushing the safety to fire I was then able to fire the other barrel.
I did not try what John had done by after pushing the trigger forward and sliding the safety back to safe and then pulling the trigger and it fired. I will have to try that and post it.

Tried another HOT, fired right barrel, pushed front rigger forward, pushing safety back to safe and tried pulling trigger, it would not fire other barrel.
see photo


As you can see once safety is on safe, trigger plate is blocked for second shot, pushing safety forward to fire releases safety latch to slide off trigger plate.