Hi All,
I don't know if anyone will see this update, but I thought it important to add some final closure. Not long after the last post the wobble came back, it was not so bad, so I changed the shocks again and fitted old man emu items. These felt great and the wobble all but disappeared for a quite a while. Then just a month ago it came back with a vengeance!
I found that the steering pump was leaking and replaced it, (bleeding the system afterwards as per the book). The next week the the steering got worse and worse, shaking hard at the slightest bump, until I felt car was unsafe to drive. I put the car up on ramps and went through the suspension checking every joint and bush, no play was evident anywhere. I then noted a small leak from the Steering pressure hose from the pump to the steering box. I pulled off the hose and replaced it, I carried out the bleed procedure and topped up the system. I took the car for a drive and it has never felt so good! I am left wondering if I have had a steering issue all along. Although I did rebuild the steering box once and then replaced it, making sure it was bleed properly every time.
All that I can say is that the car now feels secure and no sign of shaking. Nobody ever mentioned air in the steering, and its not something I ever thought about, but it will be first on the list if the problem ever returns.