For LDD model I had quite some problems. The wheel geometry was quite hard to build (poor hing tool), the rims wouldnt fit in the tyres (they fit in real life, but they arent made for each other) and because normal pins wouldnt fit in pulley wheels I had to use cross pins.
After I finished one wheel, I had to redo the whole process, but mirrored! Also there are 3/4 pins where 3L ones should be, where the beam is placed halfway through them (illegal method by LDD, yet used in Lego models).
I also found a big, where the connector (colored red) wouldnt fit on top of the yellow brick, which it should (same applys for bushes).
Somewhere along the build the chassis shifted slightly, but its not too disturbing.
The end result has almost all the parts with excpetion of panels in the rear and wheel rims.
Total LDD build time was arround 3 hours, a good portion spent on wheels.
Hope you guys like the model!
Edited by Zblj, 27 September 2010 - 08:19 PM.