Stan, I can't help with a source for conversion to double triggers but will say that I've owned five Smiths with the Hunter One and they all worked perfectly to include heavy hunting loads and switching between barrels from station on sporting courses. The latter with target loads to include the so-called "low pressure" shells and also conventional factory loadings. I do remember though to pull the trigger through its full arc when firing. Methinks the bad press about the Hunter One is at least partially due to gents just touching the trigger as opposed to pulling through.