Emb 1 diff issue?

[Ticeysoft]

Hi all,

I'm a newbie to all micro kit and decided to start with an emb1. The last time I had any rc kit was the boomerang from tamiya and the club 10 cougar..

I have the kit version and have put in a 12t motor and the problem at the moment is when putting little power on there is a clicking sound like the motor is missing the spur

but when looking it's not.. All the prop still moves but seems like it's missing from in the rear diff.. Are there updated versions of the plastic one?

Or am I going mad?

Thanks in advance