I have this problem sometimes, I can get away with hand holding the spindle whilst undoing the tracknut. If this won't work you could grip the axle with a cone spanner. Do try cleaning the threads though - I just use WD40 and a soft schmutter (old cloth).
I have this problem sometimes, I can get away with hand holding the spindle whilst undoing the tracknut. If this won't work you could grip the axle with a cone spanner. Do try cleaning the threads though - I just use WD40 and a soft schmutter (old cloth).