I Drove the ruckus around today and started to hear a clicking sound, I thought I broke a tooth off the differential gear. so I ripped the entire rear apart and found no problems. It ended up being a rock that was stuck under the driveshaft, nothing broken!!!
LOL, I had something like that the other day. Heard something like cogs skipping, took off slipper cover, mesh was fine, decided to risk it and let the gearbox selfdestruct if it so wanted, I got a spare. A minute later my wheel falls off. 'Twas the sound of a hex stripping.