I just got a call back from Westone CS this morning. CS staff recommended anybody who has a problem to please contact them. They encouraged everybody w/the current problem to first trouble shoot by moving the cable to the opposite channel to test whether the problem switches as well. If it does, they will send you a replacement cable. However, they would like to talk to you first in order to assess whether this is a simple cable issue or something more severe. I got the sense that Westone wants to have its customers happy. My interaction w/the staff member was very friendly, fairly quick and very helpful. So my experience was pretty much identical what JayTheKing69 had experienced.
DesastorHiya, That's been my experience too. I registered mine - if you don't have the box the serial number is on the iem, just remove the silicone or foam tip and it's on the stem! At first they wanted me to RMA the cable and drivers, but once I'd swapped the cable for a new Westone one and confirmed the problem remained they agreed to send a replacement cable.
I'm happy with the customer service - they confirmed too that the deal with Massdrop does mean we have 2 years warranty with Westone even though Massdrop is not normally an authorised reseller.