I have a Hitachi GD-2000 and it is acting up on me. It is taking forever to find and read anything. I figure it is dirty, so first question is how to clean it? Compressed air and a CD cleaning disk? Have not tried either yet. Then once I get it clean is there a way to test how fast it is? I know it is old, just want it to last a few more months if possible. Thx for any help