Tell Target Buttons Sticking

Hey there I have a question and if anybody could help me I’d be most appreciative. I have some buttons I created using Tell Target and they work fine if you go over them at a reasonable speed but if you go fast then they will get stuck. If you roll back over they will fix themselves but I’d prefer if they didnt’ do it at all. Here’s the link to the page and here is a link to the FLA.
Thanks very much,