I need some help ladies and gents. Just finished my first techinc build...awesome time! But i had these parts leftover, am i good, these are "spares". Or i messed something up. :
Lego Technic Bricks 4x Dark Stone Grey Z24 Gear Cog Wheel 6133119 24505 NEW | eBay
LEGO PART 3649 Technic Gear 40 Tooth | Rebrickable - Build with LEGO