but can salvage my seat mechanism by replacing long spindle in photo

its the metal piece, you can access it quite easily,
unlatch seat bottom, undo two rear, two on either side screws, that hold the plastic covers on, pull out split pin, the plastic roller comes off and you pull spindle out,
the teeth on the end of mine have splintered, and the back keeps collapsing
can anyone help
please,
pretty please
beer tokens available
or will travel if your not too far away
charlie