I've finally changed the fluid & filter & it's like a new tractor, the hydraulics are so responsive now, I think if I'd had a bale on the loader on the first use, it would have chucked it over the roof!!!!! As suggested by someone on this forum, the Filter By-Pass Valve was fitted on the wrong side of the filter!!! Only question now is, brakes are fine, I've not had to bleed them & with the pedals locked, the work very well & the pedal is nice and firm but independently, they don't work, as I push one pedal the other rises and the brake doesn't work. Is this something bleeding would solve?? It seems there maybe some sort of valve issue!!! But then again, I doubt I'll ever use them independently so it's not too much of an issue, just one of those niggly, annoying things that you know should work!!