You probably shouldn't re-enchant it as the enchantment doesn't work and it may be the reason you are taking damage.
Also, you know the bound armor does not effect the blood anymore? Has been that way fir the entire 1.7.10... You can make potions and stuff ti get it to mostly 100% reduction, but not the full one like it was before.
Bound armour by itself gives 90% reduction. It can be increased with a potion effect to 100%. The damage it mitigates is taken from your LP network.
I think you misunderstood the statement he said he is taking normal damage I believe that means that he is taking the full damage despite wearing the armor
I know this is an old thread, but @YourMCGeek did you have a Blood Orb in at least one of your armour pieces?