Eddy glad to see your getting on well with your kit.Now you can dish out advice from actual experience of building the c 50 and silence the critics!! The Boy and Matrix are right in that sometimes the output gear of a servo is on top of the motor shaft, but this is done just coz that makes a good strong pivot point( its not locked to the motor but driven through the gears at a different speed).the potentiometer input shaft is much larger than the motors and when viewed from the top maybe you mistook it for the motors.I've taken quite a few servos to bits to reverse direction and replace gears and havent seen a direct motor to output drive,ever. Can you imagine the size of motor that would be needed! Just my penny's worth though.