After a crash, even the small ones, something is going to get bent or broken... After any crash you have to have a good look at the heli...

Things to check... Flybars, feathering shaft, main shaft, main gears and tails... Bent flybars, even slightly bent, can throw the head out of align... blade tracking can throw it out, feathering shafts slightly bent will induce horrible wobbles... you have 50+ whirl'n spin'n bits ache'n to fly apart against ur will for them to stay together... So after a flight and especially a crash it makes good sense to check everything over...

happy fly'n