Situation - using the Utilities/Change Filament/Load Right Menu and waiting until the correct temperature - as I start pushing the filament in it appears to start feeding and then it just "skips" this is accompanied by a rapid tick, tick, tick noise and the filament won't progress any further.
I've tried on the second head and it does the same.
The printer has had about 20 hours use.

Cheers.........Doug