Weight bolts are commonly used since a cue maker cannot always get a customer’s targeted butt weight without one.
The task is to use the lightest weight bolt & to make it headless with a cored butt to allow positioning the weight bolt.
As long as the weight bolts are installed while the cue is being built and making sure it does not screw up the balance, I am good with that. Should have made myself clear that I was referring to weight bolts that are added at the bottom of the butt to achieved a certain weight like most production cues, while it does correct one requirement of the cue, it screws up the balance for me.