Originally Posted by m4a1mustang

Jerk is a result of user error. If the combination of clutch and lever operation is not smooth, you will jerk. You basically become a jerker if you can't do it smooth. 1-2, jerkin' all the time.

Removal of the helper spring allows one to be smooth, which helps in preventing jerk.

Not saying you can't shift jerk free with the OEM spring, but it's much easier and more consistent without it.