Install the ultralite kit from Cajun gun works using the 11.5# hammer spring, extended firing pin, reduced firing power firing pin spring and reduced power trigger return spring. Polish the internals (trigger bar, sear faces, disconnector, hammer and hammer strut) to further reduce and smoothen the trigger pull.
I did these to my Shadow 2 and my DA is now at 5# 10 ozs. SA is at 2# 4.10 ozs. I replaced my trigger with a modified recurved trigger and installed a pretravel and over travel screw.