young Ed
Veteran
it is top one with balls facing down towards the ground and bottom one faces up with balls towards the skyI think MikeW might be right the races fit alternately i.e one up one down and not both the same way round. I'd just check that before admitting defeat, good luck anyhoo,
![Whistle :whistle: :whistle:](/styles/default/xenforo/smls/whistling.gif)
Cheers Ed