Brass Jadagna is 82 Gold and 46 Leather (according to both bg-wiki and wikipedia)
82+31=113 = 110 + spectacles + apron + shield
46+31=77 = 70+torque+hide stretcher moghancement+tanner's gloves+adv. synth support
theoretically tier 2 synth!
edit: I can confirm it is a tier 2 synth (so leather cap IS 46) with the mentioned items above, I just went 5/21 with many breaks because I upgraded the shield to 100% before doing these synths (kitron macaron, Ionis, and orvail ring make it more manageable).