Thanks guys, i think whether it pops or not may be to do with the bump stops, the last time it was in it looks like they have pushed them all the the way in to try and (failed) to find the clunking, i've adjusted them and it does pop a bit but not like i remember, i still think the latch might be buggered!

Oh well, god only knows what it'll be like after they've had the boot apart to replace the camera!
