I haven't done much with the Hewitt lately (including actually riding it) but I have the last two pieces of the puzzle:
1) A SRAM XX 10-speed (=11-speed) rear derailleur to match the silver/black/red of the rest of the SRAM Red groupset, while still allowing me to keep the 11-36 cassette
2) A Columbus Futura SL carbon fork to match (well, kind of) the Columbus frame and allow me to run 28mm tyres. I reckon it suits the frame better than the EC90, but I'll get some photos up asap
I spent a while finding these last two pieces and while I'm relly pleased to have properly finished it, the danger is that I'll now lose interest and sell it...