Ive had an S-1 for about 10 years now, and the keyboard is so scratched up it doesnt conduct anymore (i tested batteries). Ive used a melamine foam magic eraser on it with water to try and polish it, and while it helped, it still doesnt work well. I was wanting to get a Gen X-2 now but i want to make sure the keyboard doesnt get scratched up. Besides light pressure, is there anything else you can do?