MOZA CRP2 pedal

Hey guys, I just got my MOZA crp2 pedals with the inversion kit, and after every session the white nut on my brake pedal keeps getting loose making the brake input 5% ish and it’s really annoying I can’t see anyone else have this problem, is it because I have the NLR g ft lite foldable cockpit or I need it to be on harder springs? Thank You