I have never seen anyone use a random spot on the bottom if the engine like that to mark "TDC". Why aren't you using the timing mark on the timing cover? Looks to me like your damper spun, or your distributor position, or cam, is off degrees wise.
It's not random. That's just a picture of the damper where it happened to be at that time. Go take a picture of the damper on your engine right now. Wherever it happens to be.
I have never seen anyone use a random spot on the bottom if the engine like that to mark "TDC". Why aren't you using the timing mark on the timing cover? Looks to me like your damper spun, or your distributor ...