This is a "what should I do" type inquiry:
I sold a local buyer (we met locally yesterday afternoon) my HD650s. We met, he inspected them, chose not to listen to them, and was fine with the deal.
Tonight, I received this PM:
"Hello, sorry I need to return this. There is something wrong with the build. I talk a lot of the time when I'm using these and there is this creaking I hear on the left earphone whenever I do it."
So basically there is creaking on the left earphone when he talks while wearing them.
I never experienced this problem (or never noticed it if they did creak when talking as I'm usually sitting down on the couch when listening) but came across these links when doing a HF search on the issue:
I offered to give him $5-10 to purchase of bottle of oil and try to fix the problem. He insists on a return. I realize returning the cans is the simplest solution so not sure if I've answered my own question.
Thanks for the help