Maybe get one of Mr Bum's "posh" kits, the one with the spring & matching top hat & guide and the short stroke nose and new seals. Try it at standard stroke to begin with and see how you get on and then fit the strokey nose later if desired?
Colin Molloy's the man for a re-blue in the Manchester area but I seem to remember seeing recently that he's relocating and not taking on any work at the moment?