Does anywhere do support and advice on a one to one basis for DLA tribunals ?

[Mortigua]

I need some help with it as I am struggling to find anywhere who does specifics - Contact a family advised I go to CAB but the one nearest to me that has expertise in disability related benefits wouldn't see me as I'm out of catchment. I have spoken with other charities but I am being sent general advice when I need someone who really knows their stuff to help with the specifics of our case.
Any ideas ? Or do I need to find a solicitor and pay - so worried as not sure we can afford that at all.