Is this the model?
http://www.egrandbuy.com/4acbararecor.html
Are the servos normal looking, three wire, servos? If yes, they 'should' work with an Airtronics receiver.

Airtronics Z connectors are wired as black, red, blue. blue is the signal wire
Futaba is black, red, white. white is signal
Hitec is black, red, yellow. yellow is signal
JR is brown, red, orange. orabnge is signal

Compare the servo plugs and wires to some that you know work with your existing equipment. If the wires are in the wrong order in the connector you should be able to switch them around.