Has anyone tried adding weight to the 2017 stock shift knob? I like the look and feel of the stock knob, but want to try adding some mass to it to try and reduce the notchy feel. I was thinking of perhaps drilling into the knob from underneath around the center hole and gluing in lead slugs. Problem is, I don't know what the knob is made of and don't want to destroy a drill bit trying to find out! I'm assuming some kind of plastic judging by the weight of the knob. Anyone know? Thanks!