Looking for remote control mod for tracked vehicle

[fatum]

Some time ago I saw a mod for an 8885 remote control that allows you to easily control tracked vehicles.

It had 1 steering wheel that, when pushed forward or backward, moved both sticks in the same direction, but when turned moved 1 stick forward and 1 backward. Ideal for controlling tracked vehicles.

Off course I forgot to bookmark this and now I can't find it anymore. Anybody knows what I'm talking about and has a link or picture?

[Saberwing40k]

Is it this, by Mortymore?

Link: http://www.brickshelf.com/cgi-bin/gallery.cgi

Or this thing, by Sariel?

Link: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=381442

That should be it.

[fatum]

The first one is exactly what I was looking for. Thanks!

[Lasse D]

If you find that this mod has too much internal friction, then try to only have the bands on every second track piece instead of all of them. This helped me when I did the same mod back in the day.