thanks for the info, it looks like getting it is the big challenge.I have never done it on a 610, the hardest part generally is getting it out.
They are pretty simple when out though, remove the spools and replace the seals, its not a hard job to do, just ensure the right seal goes in the right place. The time spent wrestling with the tube lines to remove it is the part that drives you mad.
Do not mix parts from different sections! Do one section at a time, or at least keep the spools seperate and know where they go.