This is bizarre. I own 8 Elites bought from TW and Digitaka. It's been three years and none of them makes noise or had any problems, thus far. It really could be anything.
What kind of noise is it making?
If it's the pinion and main gear, you'll hear and feel a humming sound from it. I remember I had this issue with three reels. An old SV that was the 8.1:1 speed, another high gear cheap reel and another Daiwa reel which I've done a gear swap on. However, you should not have any sound from it.
Another thing is the bearings. You really need to clean out the bearings and lubricate. Just one bad bearing can freak you out.
Best thing to do is be very observant on the disassembly. Inspect everything carefully. Clean and reassemble. You can spot imperfections or anything that is faulty with magnification.
As anything, You could've got a bad unit upon arrival