about your problem recipe I dont know how fix that,and maybe its a vanilla issue,like if I need a Reinforced Carbon Plate but dont have coal in my inventory factorio will tell me I dont have the ingredients,even I have Pure Carbon and Clean Carbon in inventory,
abd about turret,in this update I increased power usage but forgot increase power input flow,sorry about that
but you can easy fix that yourself,go inside mod folder,prototypes,war and enter in n-electric-turret,go to n_electric_gatling_turret,energy_source and increase input flow limit ;) until I realease a new update