question guys and gales ...this is my first build - i watched the Finess videos and it says to have a little slop between he main gear and the motor gear .... i cant seem to get get any on mine - after i put my heli together there seems to be no way to make the gears fit together any looser (i have the Rex SE) .... will this loosen up over time of flying or what shoudl i do? ... if i dont loosed it up then what?

thanks