Moderators can't see the "Edit Poll" option
 

My moderators can't see the "Edit Poll" option in polls. Yet the moderator setting is set to yes for "moderators can edit polls" in the admincp.

Is there some other way they can get around this?

I sent them a link to the edit poll bit which gives me options to add/remove choices etc, but when they click the link they get the no permission page.

Can anybody help me?