I have a Hitec Superslim 8-ch. Rx. The servos all have the U-shaped connectors (both corners on one side are beveled), but the receiver's jacks look kinda Oklahoma-shaped (an extra little slot on one corner). They work together fine, but my question is, are the Oklahoma-shaped jacks the Futaba J-type? Would a servo with a Futaba J-type connector plug into this receiver?