We recently had a repair which had a cracked screen and Digitiser on a Sony Vaio SVT. The whole digitiser and screen was cracked and bent. Replacing the screen was no problem but the Digitiser that was ordered from Sony did only work on the right hand side.
If this happens the part is DOA (dead on arrival). We tried fitting the screen and the old Cracked Digitiser. This worked better.
Hopefully this is not a common problem when ordering parts from Sony. Please let us know if you also have difficulties.

Adam