I think the bent side might be a trick of the angle where the red shoe matches the red scoop. I will look a little closer. It's getting dark now, but I can take another look tomorrow.The blades shouldn't touch. If both blades are turning it 'might' not matter. But, if one of the shear pins breaks then it's possible that the fixed blade will be hit the free wheeling blade with the broken pin. Probably not good.
I don't know if it's the picture or not but the left side of the housing looks 'pushed' in somewhat. If so I wonder if something could be out of alignment with the shaft.
If you take the shear pins out of the left side one at a time and spin the auger, does it spin freely? Does it touch the other blade?
I wondered if someone might have inserted a shear pin at 180 degrees instead of matching it to the other blade. They kind of look like mastodon tusks on the left side or \/ on the left and //on the right. They were hitting each other when I was messing with them, but I didn't notice anything weird the one time I used the blower.
Is it possible to insert a replacement pin when the blade is out of sync with it's neighbor, or do they only go in one way?