I'm thinking of putting a larger bolt knob on my MKII BV as it is hard to get ahold of as is. Does anyone have any experience with the DIP bolt knobs or some other brand? Also what is your thoughts on a smooth or knurled surface? I would really like to find one made of SS if at all possible unless you think it would make the bolt too heavy. The shank will be threaded 1/4-20. Thanks for your thoughts on this project.