I use them for urban work. love them, makes a big difference. I have no problem with them cutting crooked, have no problem sharpening a chain either. Maybe just lucky. For woods work, they aren't durable enough the rails are typical Oregon weak, and they do flex too much for aggressive production cutting.
has anyone ever taken a bar apart??? the reason i ask is, if that center piece is solid, why couldnt they put holes in it like a aircraft before they put it together, to lighten it up???? just a question that always been in my mind. maybe i need to take one apart---------