How To Replace The String On An Excalibur Crossbow

Over the past couple of months I've been testing out the new Garmin Xero X1 crossbow scope, which is mounted on an Excalibur Assassin 400 TD. During that time, the center serving on the crossbow string unraveled and since I couldn't find any serving large enough at my local archery shop, I picked up a new string. Having never changed a crossbow string before, I called up Excalibur and they sent me a simple stringing aid and told me it was an easy job. I figured I'd see if they were right about that and decided to make a video of me swapping out the string for the first time.