Update - it transpired that I have yet to stretch the tyres, pumped it to 120psi and left it like that all day and deflate back to 40/60psi retain it's balloon shape.
Now it's 28mm exactly (previously 26mm).
@edscoble started
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Update - it transpired that I have yet to stretch the tyres, pumped it to 120psi and left it like that all day and deflate back to 40/60psi retain it's balloon shape.
Now it's 28mm exactly (previously 26mm).