Hello Peter3442,

Thanks for your quick reply, there's some very useful information you've given.

I have replaced the fluid with ATF and there's no play in the tie rods.

I wasn't aware of the adjustment possibilities on the box or the straight ahead wheel adjustment in conjunction with centering the box. I have adjusted the tracking to normal.

I did read something about the pump for the Adwest system producing more pressure than the older version, they do have different part numbers and are both driven off the back of the dynamo.

Unfortunately, my box is leaking badly so will have to come out for seal replacement, it doesn't look like a simple job due to the difficult access to everything.

Good advice about the pipes, mine look quite ancient. The carbs will need to come off to gain access to the pipes on the box. It seems that the Adwest system is very good when working properly.

I just need to get hold of a later repair manual.