Does anybody know of a good customizable hex level editor?  I do not want to design the levels in the text editor, but I cannot find one that does the job.  My tile format also allows variable-width levels with the height of 9 blocks.  The format is different compared to other editors I have seen.  (The reason I am doing it this way is for speed and efficiency.) Here is how I encoded my tile format:

[COLUMNXXX]
[NXT COLUM]
Becomes:
CN
OX
LT
U
MC
NO
XL
XU
XM