Related to internal routing fuckery... even tube-in-tube doesn't save you some times. My Levo has plastic tubes that are routed through the frame for that stuff, and glued to the ports at the exit. But the tubes are just *barely* too tight to allow the fat Hayes Dominion brake lines to make it all the way through. Like they fit barely when you start, but over the entire length the friction builds up to the point where you can't force them through any more. So after a few hours of fighting with it, I had to rip out the guide tube, and just feed the brake hose through unguided. Which, of course, meant dropping the goddamn motor. And then after the first ride, I discovered that the naked hose rattled, so I had to slit a piece of foam tube down the side from the display hole in the top tube, and feed it down through the frame, with a wrap of tape every couple inches to keep the foam in place.
Remind me why internal brake/shifter routing is good again?