The retracts are a no brainer for me, set them up and leave them alone.The Zen has counter-balance on both elevators and rudder.
what happen with the retracts they are weak or what.
And the counter-balance for elevator and rudder I think the zen .50 don't have it.
I have the modelSPORT video magazine and they show the construction of the zen 120 and don't have counter-balance.