I've got about 2100 km on my six month old Revive DD (21 speeds) and the plastic
box that moves the pin in and out for the Dual Drive does not want to stay in
place. When it comes off, you are left with 7 speeds and not 21. My LBG has
ordered a replacement from Giant here in the Netherlands and I should have it
within a week or two.
For those of you who have the same system, it might be worth your while to use a
plastic tie to keep the plastic box in place. I think the shape of the frame
where the box is causes (after time) this problem. The plastic tie might
actually be the solution. Just passing this on. I haven't been here for a
while as I've had no problems and ... well, nothing to say.
All the best, Dave Horne - The Netherlands