I was just adding arrowheads to a line in corldraw x6, and i realized that the arrowheads are too big for the concept i'm working on. But i cannot change the size of the arrowheads. if i try to scale the line, it just increases or decreases the length of the line, the size of the arrowheads remains constant.
You can edit the arrowhead, try with one you do not like, and modify it:
Below the arrowhead press Options
And you can choose New and change it
Or select one to modify and play with it.