Re: what did you do to your motorized bicycle today?
Installed the extender today. A really long allen wrench is needed. Since extender must be mounted to bottom of quill, I found the derailer cables too short to let me mount it. Tried mounting extender before quill, tried both together, no luck. Had to unhook derailer cables, then mount, then reattach all cables - just barely had enough cable to reach OK.
On the plus side, cust is really happy & job was much easier than a handlebar swap, even feels more solid than I thought it would.