Thanks guys.
Am concerned about your use of a solid or non-vented stunt pommel with sound. Not a good idea as it could actually damage the speaker and the heat that cannot be dissipated easily from inside the hilt also could cause problems.
I put the solid pommel on the bottom of the pike, and added grit tape to it. I have a vented coupler before the first yari extension.
The pommel you saw on it was MM's, had a hole in the bottom, and was borrowed for video purposes...lol
I've ordered some colour disks - gonna throw a red on the GB, and see if I get purple. Meh - worth a try.