Can't recalibrate true patriot armour set

I have 4 pieces of the true patriot armour set and I want to use it for the bonuses that it gives. The problem is that it sucks right now. I have several pieces of gear that are way better than it. I thought I could recalibrate it as normal in order to be able to make use of the bonuses that come with the complete set of 6 items without having to use awful gear. When I get to the recalibration to try and improve it, it says I do not have the materials to do it. I have full everything, I rarely craft at all. Why can’t I upgrade the gear?