I use my Legacy with my AGA T+ atomizer. The Legacy works great since I use 28 ga kanthal wire for my coils. The problem I'm having is that I have to back the small screw out on the 510 connector in order for the AGA T to fire. When I tighten the AGA T down the small screw turns also leaving me with an unstable connection. Is this what the small split washers in the maintenance kit are used for? Do I take the screw out and place a washer beneath it?