OK, reading through the manual, here and various other information sites I dont think there is anything wrong with it.
The manual states to position the cam lobs as pictured, then nudge the flywheel forward to the timing mark, this actually moves the TOP of the cam drive gear to where mine is.
I spent a lot of time turning the engine over and over and trying the chain on the gear for ages and its always slightly off (half a tooth).
The pictures above are with BOTH cam tensioners in and zero slack at the front. The cams are still tensioned as they were taken off (I had pins in them) so theres no issue on those.
Assuming there might be SOME kind of give in the chain as it gets hot / worn then the gear will err slighty back so this should be ok.
I shall report back once she is running, hopefully with good news and not " I had to rebuild my head / valves " LOL
As a side note, does anyone know a supplier of the base gasket, head gasket for the big bore kit? or do I have to contact Wiseco?