In the reconstruction guide,
Problem 1: Gear grinding/chewing. To fix, add 3 8z gears and bracing. Credit goes to Huw from Brickset.
I looked at the PDF file, but when do I follow the steps?
I.e., from which original step I switch to the fix, and where/which step to follow after the fixed PDF?
Problem 2 is much clearer in that aspect. Thanks!