about the balll diff assembly at step 3, if you notice the arrow at the far right pointing the final assembly of the diff, its tail was drawn "twisted", unlike the normal "straight" tail arrows. this is to show that you have to turn the entire diff around to screw in the BG4 screw from the bottom BG6. it also shows the longer diff joint, which is BG5, located on top. one difference between the BG5 and BG6 diff joint is that the BG5 has a pertruding edge cutting across the slot where the BG3 spring and part K4 and BG1 nut will be inserted. so tamiya has drawn it clearly.
i bought a japanese rc magazine that featured the Durga and it also warned that we must tap the holes, especially the suspension mount. they even showed a broken screw that was stuck in it! got to thank jimmy, that you reinforce the idea of tapping the holes with a titanium screw and a strong hudy and i haven't strip a single screw throughout the entire build. all my screw heads are in perfect condition.
