[sam.forsyth93]

I ended up getting it just 10 minutes ago. Was really easy once I figured out what to do exactly. Damo's instructions are correct. However I didn't get that you had to pull the mechanism the speedo cable goes into out. Once you unscrew the 10mm screw next to it, you have to slowly wriggle the mechanism out (with cable detached). That makes a hole into the gearbox where you can fill, and the actual gauge is on the side of that plug.