What do you you folks us for hexing?
Try Nifskope.
I using nifskope, but how does one scale pieces instead of just enlarging them
Actually, I don't know how to use nifskope. :(
with nifskope you can scale vertices on editable meshes, right cliock on the editable mesh - transform - scale vertices. however this is kind of a permanent change (i.e. no undo) so i usually copy the piece i want to change first, then remove branch if i screw up.
for actual hexing, i recommend using Nashex or XV32 (i think that's the name). theres also the mesh editor program a little program built specifically for hexing FF1 meshes, its available on the fxforce page.
i really only use nashex now for changing fx nifs, i used to use it a lot for keyframes, but m25's program has completely changed that (THANKS M25!)
I always used XVI32. A bit of a learning curve, but its free and powerful.