Nice vid. The heat trick is a good one as you can use this on any link that's a shade loose. I use a hot air paint stripper gun on low heat and I heat the link (still on the ball) for maybe ten seconds. This causes the link to shrink onto the ball and tighten it up nicely. You can also make a link sizer/reamer if you have a spare ball. Mount the ball in a pin vice and cut a slot in the ball 'length-ways' and half way through with a Dremel cutting disk. The slot you cut in the ball gives the ball a cutting edge so it works just like a regular ball reamer.
