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Just a thought: is the axle asymmetric? Are the pedal ends of the arms equal distances away from the chain stays (see third photo).
In the second photo, the NDS looks a long way off the BB, compared to the DS. The chainring bolts nearly overlap the BB shell which suggests something is wrong to me.
Perhaps the axle is the wrong way around...
So today I tried to install my Stronglight 49D crankset onto my frame. I had a 111,5 TA314 axle which would give me a 42mm chainline. But after placing the axle into the frame and putting the crankset onto the frame I ran into some problems. The chainring was hitting the frame, I also had a Stronglight 118mm axle. This worked fine, but now i'm dealing with a 44,5 or 45mm chainline. Are there any track hubs with more threading so you could put a spacer in it, On the pictures I have added you can see the clearance I have with the 118mm axle. There is not much room left, so a shorter axle won't do I guess.