I have heard people talk about having it done and being thrilled they spent the money but what is it and what really does the tech do? Is it more than just going into the menu or using Avia(or something similar)? I just bought a Panny 36HX41 and will get it on Sunday and I am scared of the the infamous geometry problems. If the geometry is not bad(or even if it is) will it being ISFed help straighten out? Thanks.