Thanks, I appreciate that is the case but thought that may be an easy approach to preventing it happening.
Cheers.
Is it not possible to set it so that a tick wont reappear until after the last tick has exited the screen?
Thanks.
Yes its www dot brooke dot norfolk dot sch dot uk
This appears to only happen to the first tick which continues to increase its distance from the second until it appears at the back of the list!