ok, so not as simple as I hoped.
In the video posted, at one point its mentioned that the changing the bar position wasnt that successful which I assumed meant it didnt make much difference. What I now think having just had a go in flipping the risers is that they didnt manage to make the change and put it back to standard.
The reason it doesnt work with the stock bar riser bolts is that when you flip the bigger and smaller bolts (larger bolt at top before the flip, but at the bottom after the 180 degree flip) the threaded whole that it anchors to isnt big enough for the larger bolt.
Has anyone managed this successfully, and did you need to change the bolt sizes (Tiger 900) ?
RBW.