I'm new hear in the forum. I just recently bought a pre-owned Technics SL 2000. I listened to an LP to try it out. I am hearing some sort of sound (like cooking a pop corn). My LP is in near mint/very good condition. What could be causing this sound??Do I need to replace the needle? And at the same time, i have to adjust the volume of my Amplifier to the 11 or 12 o'clock position to get my desired sound. Hope you can help me on this. Thank you in advance.