I was hearing a grinding sound and disk were getting scuffed up. At first I thought it was just dirty so I cleaned it out and re-greased everything etc... but still having the problem but now the games won't even load. I just put a flip top lid on it and now I can see that the disk is getting dislodged by the laser. Not sure how this happened but it's definatly too high. How do I adjust this? Thanks.