I never have any trouble with mine. Everything on my wife’s bike, however requires hydraulic firefighting equipment to shift….
What I do to undo hers is:-
– Put the splined lockring undoing HG nut thing on.
– Put skewer back in (to hold above HG nut in place)
– fit chain whip on one side and spanner (on nut above) on the other.
– Lean wheel up against the Aga (ooh! – don’t get excited, it’s old and is just used for bashing things on) so wheel is upright, chainwhip is at 9 o clock, spanner at 3 o clock.
– then I climb on. One foot on each (the handrail on your Aga will help you balance and brace yourself for when it goes) and jump up and down on it carefully. That always shifts it in the end….
Hope that helps!