Bent seat stay

[Chris S]

Does the rear wheel sit in the centre ?

As far as I can see. It's a steel frame so I can spring the dropouts in or out a bit. I've also got spacers on the axle that I can adjust.

 

[Ajax Bay]

You have horizontal dropouts so fossy's question can be ignored.
You have already said the dropouts are at the same height, so you'll just fit the wheel same as you always have.
You are rather unlikely to have made any significant difference to the OLD.

 

[FrankCrank]

Might be worth checking the dropout alignment, easily done with a couple of old spare axles