There is a "font Generator" in es100chnec's archive
https://yadi.sk/d/cGm__9Au3YBcz8Maybe that can help. I don't know exactly what it is or how to use it.
I myself, edited h5 font some time ago, but I simply used photoshop and changed the font tablet, which is a simple texture. It was quite hard and time consuming and I newer achieved 100 accurate resolts.