No need to send it in, just drive down there in the future. Cascade Designs is located off 2nd Ave S between Safeco and Boeing Field They have a walk-in area for warranty/repair issues.
Having worked in the wattanty/repair depatment at Cascade I was impressed with how they stood behing the produtcs. If you ever have any kind of problem it is worth taking it in. They will do what they can to make things right.