Update on my Prusa I3 MK2 Bed
So I managed to press the Y rods further in their mounts. All 4 ends actually slotted in further and it may have made a difference or certainly will help keeping it level for the future I expect.
Please let me know any thoughts you have on the warp I still seem to have and it'll be good to know who else has had the same problems. I'll be checking out the FB group this weekend.