I have a question. I am contemplating buying a t-touch expert. I was wondering why the battery replacement was such a big deal? Looking through the standard-t-touch disassembly thread on this forum, it doesnt look like it was a 200 dollar service rather something that you could do yourself. I was asking a tissot AD about it today and he was saying something about a code you had to have???????? I know that it you want to keep your warranty you have to have it serviced by authorized service, but outside of that are there any nuances to the t-touch expert battery replacement that anyone knows about???