Oh, Erm, I'll stick my photies on from here then.
![](http://img.tapatalk.com/d/14/07/19/eguqe9ap.jpg)
Here's the standard throttle tube measuring at 37mm dia which gives you about 1/4 turn.
![](http://img.tapatalk.com/d/14/07/19/8e2u8ypu.jpg)
This is the piece I cut out of 35mm pipe, the walls are about 2.5mm thick. I just cut it so as it fitted on the throttle tube like this.
![](http://img.tapatalk.com/d/14/07/19/ajy3etyv.jpg)
Once glued in place, I cross drilled and glued some 2mm nails in just to be safe.
![](http://img.tapatalk.com/d/14/07/19/aze7epu7.jpg)
Once the glue dried, I trimmed them down with a file, and cut some slight grooves in each end near where the cable nipple runs.
![](http://img.tapatalk.com/d/14/07/19/ne3u4yne.jpg)
Once this is done, you need to gently remove some metal from the two lugs in the housing, but just enough to allow clearance. It's only a couple of mm.
![](http://img.tapatalk.com/d/14/07/19/ubujuge7.jpg)
The cable guides needed the ends chamfering slightly, to allow the tube to run free.
![](http://img.tapatalk.com<br />/d/14/07/19/zapy6uze.jpg)
Once all put back together, it has reduced the throttle turn by just enough to make it 1/5th. (you might be able to make out the marks I made before I removed it.
![](http://img.tapatalk.com/d/14/07/19/yva2apyj.jpg)
C'est voilla! All done for Bugger all!