i've recently stripped a rack down to see if this can be addressed, and it turned out to be quite straightforward to limit the steering stop,
on the end of the rack on the drivers side, under the rubber condom thing is the end of the shaft, on the shaft is a bolt and washer, the washer is actually the stop for this side, all thats needed here is a small collar the same diameter as the washer, only about 5mm thick.
the other side is a bit more fiddley, you need to undo the bolt and slide off the track rod arms along with the bracket, this exposes the shaft, peel back the rubber boot and you find a plastic ring that the rubber locates on, next is a small metal collar, this is the stop for this side, this needs to be moved down the shaft towards the rack itself, this will expose a circlip, once that is removed the collar and the plastic retainer can be slid off the shaft allowing you to add another spacer the same as the first side, then put the collar and circlip back on and re-assemble. it sounds complicated but its all quite simple when you have it in front of you, this could be done in situ but its probably easier in the long run taking the rack off.
i'm making up some of these spacers so i have them in stock.
to John and G40LP, you should have let me know directly if you've had any problems, i'm always willing to sort them out.
the wheel rubbing occurs on some and not others depending on wheel choice, which is out of my control, the arms on the frame aren't a design fault, by their nature they have to be straight, where the original ARB was cranked to combat this issue, i have made the arm mount as far down the frame as possible to eliviate the problem, any more and the adjustment would turn into camber not castor, if the arm mount was further up towards the original ARB mount area, the wheel rubbing problem would be greatly enhanced.
stuart. PPS