Visual Elements for Custom Scrollbar?

I built a Simple Custom Scrollbar from Kirupa’s tutorial and it works great.

But the client is dissatisfied with the aesthetics. (See attached).

I made this from a Photoshop tiff he sent me of one he saw and liked. But I had to cut the elements apart and they look slightly clunky. Do you know where I can get precisely crafted elements like this, or similar to this? Also any hints on precise positioning (mine don’t look perfectly aligned vertically).