IIRC the snap in was significantly wider than the original eject box( before I had mine changed)
The difference is down to slim normal phones v the considerably wider smart phones ,iPhone in particular
have you access both to offer up and see if a Dremel will help
if not try iPhone against the eject box to see extent of problem
AND read this
http://www.z4-forum.com/forum/viewtopic.php?f=2&t=35627