Hi,
Putting inlays in a finished cue opens up a can of worms because you have to re-turn the taper and refinish the cue. That will be expensive. Time is money. The the shafts won't match and have to be redone unless you cheat the taper bar. A lot of pain in the ass stuff for a CM, that's why no one wants to do it.
Buy a new cue and sell yours or keep it for a break cue. You will be better off.
Rick