When, in particular, the internal angle γ or δ formed between the slanted sides of the wings 22 22 and {TAIL ~ the V groove walls} is {HEAD ~ greater than 90°}, then the action of the wings 22 22 tends to scoop the fiber 11 away from the V groove walls as it is being guided into place 
When , in particular , the internal angle γ or δ formed between the slanted sides of the wings 22 22 and { TAIL ~ the V groove walls } is { HEAD ~ greater than 90 ° } , then the action of the wings 22 22 tends to scoop the fiber 11 away from the V groove walls as it is being guided into place
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH