Another technique I found that works is to use a dremel to cut a slot in the top retaining ring, you then drill 2 small holes and use a strong wire to hold the 2 sides together. The top rubber hides the repair and it holds well.
Hello All,
Just a little note to say Hi and show off my DT's. Hope to be of any help if I can.
I'm also currently restoring a DT250MX.
The 360 is my pride and joy as I had one many moons ago, and this particular one rides like new.
Ride safe.