Hi, Everyone - I have an old Technics SL-QX200 turntable and it is not playing correctly. A couple of things - for one, I'm getting a lot of hum. Also, the arm won't go up and down using the queing slider. And it sometimes will play okay, other times will just start skipping - and now it's starting to sound "distorted" instead of clear. Would a new needle fix this part of the problem? If so, can you get them any where these days?! Walmart? Or a specialty place, or what?!! Thanks for any tips!