I just re-setup my cuffs, and now my arm / thigh cuffs do not rez.
Hmmm have you activated your arm/thigh cuff plugin yet?
Remember, every time you set up a new set of cuffs, it is "zeroed" - it does not know that you have plugins (even if you ran transfer from a previous HUD - that transfer only transferred settings/stats, not the cuffs themselves).
To fix, simply activate your plugins by wearing the activator and following instructions.