—numerous in fact:

1. The grip is too slender.(1)
2. The palm is broad.
3. Allowing the forearm to intrude into the bow.
4. The left-hand grip is slack.
5. The string is too long.
6. The lower end of the bow stands too erect.
7. The archer’s sleeve, if he has not rolled it up.
8. Drawing the string with excessive force.
9. The bow is overly stiff.
10. The two string loops are too wide.
11. An excessively fleshy palm.
12. Lax joints.
13. A soft string on a rigid bow.
14. A warped grip or siyah (2).