Well what a day i have had.....
I went to change my glowplugs this morning and two of them were a piece of cake the other two however are now snapped off in the head

To add insult to injury i attempted to drill them out, one i had a go with a stud extractor which is now broken off inside it and the other has half a drill bit in it so this thread is quite rightly titled glow plug disaster!!!!

Im now faced with the concept of re drilling them and having to drill into hardened steel! or removing the head and having a go from the other side!

Any ideas would be great because i'm all out!