So I've been playing more fingerstyle on my P Bass and I've been using the bass pickup as a thumb anchor when playing. I tend to play a little hard and as a result, I've managed to push the pickup down. So now, after a particularly long practice, I've noticed the end up the pickup is lower on one side. I think I've smushed the foam or something underneath. I supposed I need to replace the foam but is there a type of foam that's a bit stronger than what is normally used and if so, where can I get it? I know some of you will tell me to lighten my touch, but that's just not how I play, so it's not an option. TIA.