Icopy,
HI khukuris are hand made by the finest kamis using natural materials like waterbuffalo horn and various Nepalese hardwoods. As a result, handles tend to crack from time to time and there is a bit of variations between knives of the same model. The one you got sounds like it is what Uncle Bill calls a blem, what other manufacturers call factory seconds. Blems are functionally equal to top of the lines HIs, they're just not as pretty. They're also fully guaranteed.
That "X" or "t" that you see on your khukuri is actually a cross. That cross is the symbol of Sanu, the kami who made your knife. Kamis are the smiths who make all manner of tools for the Nepalese people like scythes, hammers, keys, etc. They also make our beloved khukuris, the national symbol of Nepal and one of the most feared weapons when paired with a Gorkha. Hope this helps.