[StuBeeDoo]

...If I'm honest, I'm losing my slot car mojo at the moment.

I can understand that, I never lose the driving mojo but do need a boost when it comes to sitting down to do 3D CAD for new chassis or painting.

Painting mojo definitely at a very low ebb, driving mojo probably somewhere around half-tide.
This morning I brought two cars down from the attic for detail and livery application.  Seven hours later, they are still on the table where I left them.  I just can't summon the enthusiasm.

If she-who-must-be-obeyed decides she wants to watch the local news followed by The One Show this evening, I might drag my sorry a**e up the attic ladder and put in a few laps.