you should try makin your own:) it’s very easy.
new file > Make a black shape (your stitch shape) > goto “Edit” > select "Define Brush Preset "> name it > hit Ok
open brushes palette > select your defined Brush Preset (should be last one) >turn all options off > click on option “Shape Dynamics” (which will turn it on too) > for Angle Jitter Control drop down, select “Direction” (make sure everything else is off) > click on Brush Tip Shape > increase spacing to desire.
Voila. Custom Stitch Brush.
You can also get creative with your brush by giving your stitch texture before you define it as brush, or making two shapes for double stitching, x shapes, etc.
hope that helps.