sounds strange
my experience is every day i use this setup darui/gnw tenten/iruka/lightmain for first round tenten in survival. works every time never failed me uve placed lightmain on 1? mine is placed there
reason not many use this is becuzz lightmain does so much dmg it wud be a waste to use calm mind :P in survival it works wonders tho :) in pvp they can just interupt :(