I have a Nashville Telecaster that I changed the pickguard on... it looks way better in my opinion. But it still hums and buzzes. What I mean by "still" is..... Since I've owned this guitar it has always hummed. It never really bothered me, because I know its just a common problem with single coil pickups. But when I purchased my new pickguard I also bought shielding tape. And planned on doing all that myself... well, I've never been inside that guitar previously until changing the pickguard and to my surprise, it was shielded. The whole pickup cavity, with some over hang on to the body, as well as the whole back of the pickguard. Whether that's factory from fender or from the previous owner, I'm not sure... So anyways, I shielded the whole back of the pickguard just like the original one. Put it all back together and to no surprise, it still hums. But, it seems to bother me more now, knowing its shielded inside the pickup routes as well as what I did to the pickguard myself.... Is there something I or they did wrong? Is it common to have a little bit of hum even with shielding? It is by no means horrible, it just more or less peaked my interest in what's causing it, especially after knowing it is shielded. Any help is much appreciated. Thanks.