I've been told that you're right about the shape of the slider; and it certainly looks to be so to me. however the spring is definitely heavier than either a clear or a black. *to me* at least the ideal weighting of the space bar is a clear or black spring for blues and browns, and a grey spring for clears (or blacks, I suppose, if I wanted same - but I really don't game) I figure if anyone has the springs they likely have the sliders as well, and it's a good way to show you when you have the caps off that you actually used a heavier spring. (of course, if you put a clear spring in a blue switch, say, there's no way to pick up on that - but I would probably use a clear slider with a browns board, although if I had a browns board, I'd likely mod it to ergo clears.)