miracl output

I was working on some stuff from the miracl library (first time i used it) i have a little problem with outputting the bignums, heres my problem.

From reading the manual i see there is cotnum and cotstr:

Cotnum goes to FILE * and cotstr can go to CHAR *

so naturally i used cotstr, the problem is every so often when the bignum starts with a leading 0 it doesnt output it.

Example: 0F33 -> "F33"

I fixed this by manually looping through all the bignums and throwing them through a %.2X sprintf but this is kinda lame, there is a way to maybe force miracl to present that leading zero ?

Thanks.