I have ZERO hands on experience with the internals of these engines. Save oil change, belts, filters, etc.
Having duly qualified myself. If the engine is at TDC and your cams are that far off on both sides, then I suggest that a chain has slipped. I wouldn't turn it over anymore until you verify the cause. If you have a bore scope, pull the plugs and look into each cylinder and see if there is any damage on the tops of the pistons. Harbor Freight has them for a reasonable price. Ryobi has one at Home Depot that is quite nice.
The notch on the bottom of the cam looks like it has a burr in it? Damaged?
Best of luck.
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