At step 148, inserting the 15L beams requires some stressing of the parts. On the cabin side, just push away the cables. On the engine bay side, you might find it easier to remove the 3x3.8x7 bent liftarm of the changeover catches. Sorry for the inconvenience, I realized the mistake only during probe building.
You can find the sticker sheet at this link (600 dpi, A4): https://drive.google.com/open?id=0B3ju3vX1o4Ouem9kRkY0elRNWUk Make sure you print it in 1:1 scale mode and NOT "shrink to fit" mode! The same sticker pair is copied multiple times on the sheet so you'll have a chance to choose the one that fits "dark bluish gray" the best.