What is the hozel depth on a Callaway GBB Epic Star driver. It measures 3/4 of an inch. Most drivers have a depth of 1 1/4 inches.
I’m 99% sure it should be at least 1” so that tells me there’s something in the hosel that still needs to be removed. Just be careful drilling it out as you can push what’s in the hosel into the club head.
We do not have that information. Most likely will need to contact Callaway. 3/4″ seems short.