OTTGDave

As shown in the image below i have designed a limb for a minecraft animation, (yes i know i should have used model bench, but i wanted animatable parts of this limb and i dont know to to produce that in model bench) my problem im facing is im trying to set a parental hierachy for the limb so it all stays attatched but everytime i set any hierachy, the piece im setting repositions and resizes, is there a soloution to such an issue or should i just start learning to use model bench?