I'll share my secret with you, (and every one else). What I used on my custom Saleen S7 is this, and don't laugh. I pick up cheap watches at the Salvation Army, that not longer work, the fancy kind with the metal push-in stems. I tear the watch apart and save the tiny screws. Then, with a small pliers, or a flat-bladed screw drive, I push the stems out from inside the watch body. You pull the actual push stem out of the outer stem body, and use the stem body inverted in the wheel center, kind of makes it look like a racing wheel. Some eye candy is better than none. You have to drill out a hole in the center of the wheel. I hope all of this makes sense, it's hard to explain. If you try this, you'll need a watch that has four identical push stems.