Just installed the purple head and blade grips for the King. Nice, smooth, relatively slop-free, flies great. The problem is, the bolts for the new grips are bigger than the old ones. I presume this is because it was probably intended for the BeltCP with larger blades and larger holes.

Should I drill out the holes in my blades or use the smaller bolt? I tend to go with option #2 since i also have some CF blades and don't want to fly them without inserts. But, I don't like the fact that the bolts can move in the grips, and may wallow the hole out over time.

Suggestions?