Hi Falmer Palmer - I am new sertao owner and the same height as you and after my first decent ride out from Sheffield to Cornwall on the Bank Holiday I realise I really am too big for the bike. At the very least I am going to have to lower the foot pegs so I can get my knees's under the false tank cut away, get a taller/comfier seat (my undercarriage is killing me!), taller or adjustable screen and possibly even the handle bar raisers.
What else did you do for your sertao and what was the most effective?
That TT screen adjuster only lifts the stock screen by 6cm, does that actually do anything?
Thanks