Hey mate. How'd you go with it? I got mine bolted up this afternoon. It was easy as and bolted straight up to the bar. I had to rotate The clutch end again do the handle is now on the bottom, otherwise it was fouling on the bar.
While I was rotating i took a photo of the process. Basically you undo the two bolts on the clutch end that go into the cross beams (the silver bars). They're a 6mm Allen key from memory.
Once they're undone you just lift off the clutch end, which should reveal a bunch of grease and the drum spline end and the clutch spindle thingy. Then with the clutch end you need to undo all the little bolts you see in the pic, and just lift and rotate the end as you need, be mindful of the rubber gasket underneath, that you don't get it all messed up and ruined when you bolt it back together.
Good luck!