I've just added full sets of various armours using this tweak and they all appear fine in the game.
One more minor thing if you're planning an upload is that the White Soapstone has the wrong hex code - it should be a 64 not a 65 which is the same as the Red Soapstone.
EDIT: I'm going to investigate the problem with the Arrows while I'm at it - as that may be something similar. I'll report what I find.
EDIT2 : Yes, it's a similar problem - all the entries in the Bolts & Arrows.txt file begin with a 4 but they should begin with 0.
Ive used this and so far damn im loving it lol, you are the man.