Hey! So I bet this is common for PS2 Slim, anyway.
Every Time I insert a Disc into my system, when going to read the disc, it grinds when attempting to read and then fails to read, however when closing the lid, and opening it, I notice the laser can still move back and forth without a disc, but with a disc, it makes a grinding sound, assuming hen moving the laser. The Disc is spinning but I don't thin the laser can read the disc, so is this problem on the rail moving the laser? If so, how can I fix this?
Every Time I insert a Disc into my system, when going to read the disc, it grinds when attempting to read and then fails to read, however when closing the lid, and opening it, I notice the laser can still move back and forth without a disc, but with a disc, it makes a grinding sound, assuming hen moving the laser. The Disc is spinning but I don't thin the laser can read the disc, so is this problem on the rail moving the laser? If so, how can I fix this?
. Saves on time, soap, water and money having to wash them. 
