[Panici]

You need to feed more of the bar through the clamp that attaches to the forks.

You'll have to move all the switches and controls over, but it will leave you with more bar sticking out the end of the grip to attach a mirror.

 

[Panici]

Thanks! I feel pretty dumb now.

You're welcome. Easy to miss if you're not familiar with the setup.

Here's a shot of my trackbike for reference: