Hi Greg's, if this is one that I have supplied to go with a new steering head then there is only on adjustment that the user can make. That is by turning the socket headed adjusting screw near the Base. My understanding is that this affects both compression and rebound damping, but not necessarily by the same amount. When we changed from the Oilite bush spec to your ball race mod we found that there was not enough adjustment to make the damping acceptable. We did try a front damper set up with the rear damping specs but that was too stiff. AVO then set up a special, which now has a different part number to the original front damper they provide so that in future anyone who has your mod can order one from them by either mentioning my name or explaining what it is for. If your customer wants something different then AVO are very helpful and if it would help others then it would be good to have feedback so the information can be incorporated into any future developments.