The trick is put your fingers just inside the first hole ..., push it down into the box so your palm is now over the trumpet, As you pull your hand out, feel around the trumpet making sure its still covered, the second one is alot easier, it's fiddley but you will know when its right.
DIRTY BOY!
I'd rather die peacefully in my sleep like my Grandfather, than screaming in terror like his passengers.- Jim Harkins