Originally posted by shyrsio I have two MX's. one is older with the serial number starting with 4 and the other is quite minty with the serial starting with 9. The newer one sounds just like yours does, with a metallic echo in the end while the older one sounds more well dampened. I recently changed the sealing on both but the sound is still more pronounced on the newer model. I have checked and the one making the rough sound doesn't have any exposure problems, so I'd say just bear with it!
I've two MX's too and when winding one on it makes almost a high pitch bell-ringing type 'ding' - had it serviced and was told that each have their quirks and they like being used regularly. No detriment in any way to its performance.