I don't mind the black plastic part, I just want it to be light as possible. My cue is fine, and easily adjustable to get the weight I want. I have quite a few extra weight bolts as we have three Schon cues, and have cut and drilled them to be adjustable by 1/10 oz, but my wife's cue is naturally heavy, and even with a cut down aluminum weight bolt was a touch heavier than she wanted at about 19.8 oz. I had Rick make me a cut back version where about 2/3 of that black part that sticks out is removed, and eliminated about 1 1/2 tenths of an oz. He is so easy to work with. When you have an idea of what you want, and talk to him about it, he seems to take it as a challenge to achieve your desired goal if possible.
In fact, I was just talking to him the other day about his bumpers for a couple of McDermotts we had, and how he made them. He sent me some pics of how he made them. I asked if he ever made them in a similar fashion to my Schon ones where they were screwed into the weight bolt and he said no as their weight bolt doesn't have that inner hole. I said I knew that but if I were to drill and tap a hole, would it be possible. In typical fashion for him, he said he could probably do it.