'Twitchy' Menus

Help!
motorbikefriendly.com
My menu are 'twitchy' the hover function makes them jump around.
Additionally, sub menus sometimes half display on hover.

I got the menu working perfectly, but then needed to do a complete site build.

I think it's highly likely that someone who knows what they are about will take a 5 second look and be able to tell me which parameters to change - but I have been at it for hours with no success.

Sorry to ask - but all help gratefully received.

Hi
you have posted in "menu manager ck", but may be your problem is related to the "maximenu ck" module ?
you have set a 1px margin and padding on Hover, that is why it moves on mouseover
CEd

Thank you.
Now repeat after me: You must not work so late your brain ceases to function Bill, You must not work so late your brain ceases to function Bill, You must not work so late your brain ceases to function Bill...

Thanks again I knew it must have been me - the code is great!