Guys, this may be an issue of how the khuk is being held. I fouuld that for the smaller handles, you can get your first finger and thumb wrapped around the habaki part of the bolster. This is a secure grip, and gets the pad of the hand off of the point.
Also, (as demonstrated at the HI MW KK 04) the accurate viking sword repros (and the originals) have really short grips with that wide lobed pommel. But the way they held the sword is diff than the later ways of holding the sword. Instead of the square axe grip (which would make the lobed pommel bite the hand-heel or wrist), the sword grip was a more diagonal fingered grip that put the heel out to the side a bit. With the viking swords and khuks, this makes the rounded flared butt a sort of guide for the swing. Takes some getting used to, but in the end it is stable, comfy, and you get a nice callous on the heel instead of jabbed.
In this grip, the forefinger is almost over the cross guard (which on viking swords was small anyhow--not yet used for defense, but to keep the user's hand from slipping onto the blade). Another grip used by the vikings put the little finger onto the lobed pommel, which also pus the hand more beside the pommel than behind it.
Just trying to suggest an alternative...up to you if you mod the knife or the grip.
Keith