Introduction to the problem
When the HSlider is set up with two or more thumbs there’s a gap between them always. The problem is that you may want to put them on one single value of the slider, but it’s not possible.
First: hide your thumbs
The quick solution is to make custom skin for the thumbs, setup the height and width of the thumb to be 1px and make a transparent background image for skinning them. That of course does not solve the problem. There’s still gap of 1 value between the thumbs, and still you cannot select one single value with both of them. Continue reading Flex 3 HSlider thumb gap issue