The ones in the docs are 33 front and 30 rear. Those don't seem quite right. What settings have others used?

I'm thinking 32 front and 29 rear.

any one?

I used the recommended settings on mine, but wasn't fully happy with the final seated positions, the rubbers seemed too stressed and weren't sat 100% right.

To be fair though, the bars never moved and I never had any further problems. I might try and tweak the sizes next time and see if they sit any better, probably try 32 and 29 as a starter!!