Hi,
Ive very same problem with my 110 crewcab 52plate
Changed everything you have talked about also and still does it. Props off and uj's done and put back on in same position still wobble that shakes steering wheel, the cab everything!!!
Wondering now if props need ballancing as gear stick wobbles like hell also or engine/gearbox mounts(but cant amagine mounts would make wobble so violent)
Really P...... me off now as 20year old offroading 110 drives 150% better at all speeds..
Pls keep me informed if you find problem, i'll do the same..
Cheers Mark