Originally Posted by
Moe Zhoost
you could file the slot backwards a bit (2-4 mm) on your derailleur hanger.
I might need to do that anyway at some point, since the bend has gone misshapen (you can just about make it out in that last picture) after having had so many times to hammer the dropout into shape after it opened up into a V; any overtightening would cause some locknuts I used to have on there that were tapered at the edges to cam their way through the damaged areas and split the slot open. It was too painful to look at, let alone take a picture of it.
I've done some of the work: the sharp-edged locknuts that came with the new Weldtite axle helped to stabilize the wheel, and I made sure to use quality axle nuts with integrated serrated washers.
In the mean time, I'm going to have to wait until Ramadan is over, the lockdown is fully or partially lifted and my Peugeot station wagon arrives, so I could have a chance to take the frame to a local machine shop and explain to them what I need done.