take an image of it, post that and buy some SCT corrector cleaner snake oil from bintel
! I swear by it its great stuff, and if you have arthritis rub a bit on
seriously do take an image of it so that you can see the difference later. buy some microfibre cleaning cloths from OPSM or similar stores (i have 3) and use then to clean the plate. it makes a huge difference and do not press hard of rub hard either. gentle centre-out movements not circular motion.
