Ball direction (up/down) (dvz)

[Whaat]

I have had same problem but don't remember how i fixed it xp maybe it was like this:
Opoint frame:
<frame> 284 BALL
pic: 94 state: 3 wait: 1 next: 285 dvx: 3 dvy: 0 dvz: 1 centerx: 44 centery: 78 hit_a: 0 hit_d: 0 hit_j: 0
dvz: 0->1
Not sure, but i would try that. Also i'm not sure is that dvz 15 too much? Maybe you should try smthing like dvz 2 and check does that work.