To fix it, all we have to do is make the middle leg a little longer. To do that I moved the stop up one stud to the top of the leg support - and all of the teeth too.
Unfortunately, that means that it hits the stop plate in the center support. That's the 4x4 plate with a 2x2 hole in the middle. When it hits the plate, the foot won't retract all the way.
The fix is to remove the offending plate, which apparently isn't really needed, so you can use the cool hollow 4x4 plate somewhere else. Here's a picture showing the removed plate circled and the stop in the space the plate had occupied.
Here's the result of our repaired droid. A nicely inclined astromech at the same angle of the full size one.
|Lego R2-D2's, both L3-G0 and the UCS 10225 Lego Kit|
Anyway, I hope this post helps save the world from Lego R2-D2s that look like they're about to fall on their faces!
I'll leave you with an annotated copy of on of the R2-D2 Builders Club diagrams showing the correct dimensions of an Astromech Unit. I've added the 36 & 18 degree angles in blue triangles.
Now I know I'm truly way too much of an R2 geek!