lol think i replied to your other thread mate.
i think manufacturers used to use a glue type stuff to detect if the device has been tampered with but i think now they tend to use the glue between parts to detect if theyv been taken apart. no harm in sending it away mate other than the postage. are they black or silver screws? did you use perfect screwdriver so it didnt slip and scratch them?
in future, the phones are put together using powered screwdrivers that are set to put them at perfect tightnes and dont fanny around with the hardware while its still under guarantee lol (id probably have done the same)
global s3, UK. Ask me anything and ill reply even if its just an intelligent (or stupid) guess