I built out my set of TS3s, 5-GW with the modus 105x (so a little heavier than the stiff) and found my windows to be pretty spot on and the shaft a very good match with the head… for me. The standard deviation of the 7 iron head was pretty impressive, especially on carry and spinsistency (lol Ping fans)
FWIW I found that the TS3 spun less than my former TS-1 gamers. Different strokes…