Got everything free(ish) and a sheet of 5/8" ply, that been propping up the workshop wall for some time, temporarily fitted to the top. Found out it will not go down unless weight is on. It is hydraulic with foot pedal and very slow. I had to test it of course, before going any further.
Max weight 185kg it says on the side. Think there's a tad more on there. But it never budged. It won't lift over 20" high now, but that will do me nicely. It will most likely stay at that hight as well. No need really to lift it up and down.
More to do yet. But may be a while.