Well, I got it through AM, right after the start of 2015 but didn't get it put up until summer, so I thought it'd be too late warranty-wise for them to want to do anything.
I think I bought mine through Lethal, I think the warranty would be directly through DSS regardless of how you bought it anyways. Not sure where you stand warranty-wise but it couldn't hurt to contact them (DSS) for tech help. They might be able to help you trouble-shoot the cause of the vibration. I just know they were great when I called them, and you're not out anything if it's a dead end.