Suspension suggestions?

[JohnL]

This can be cured with a variety of products.
Example: Ikeya Formula tie rod ends.

Adrian

I'd be wary of using such a product if it resulted in the centre of the rod end ('rose' style joint) being spaced further away from the steering arm than the centre of the 'ball' would be with the standard tie rod end. My reason is that you might end up with excessive twisting of the the steering arm because the tie rod end (or 'rose' joint) is mounted to the steering arm in single shear, and as a result can impart a twisting moment into the steering arm that will be stronger the further from the end of the steering arm the centre of rod end / rose joint articulation is.

If this occurs it could become a source of bump steer in itself, though in a lot of applications the steering arm will be very rigid (enough to adequately deal with the increased forces fed into it), in others it may not be rigid enough even for the standard set up.

If you look at the steering arms on 'formula' race cars or similar, you'll see that the rod ends are typically mounted in double shear at the steering arms (steering arm itself being made up from two seperate pieces spaced above and below the rod end), the purpose of which is to eliminate any twisting moment in the streering arm, and also to allow the use of a lighter weight steering arm (less metal but stiffer due to superior design). You'll also probably note that such a set up usually allows a deal of latitude in exactly at what height the rod end can be placed on / in the steering arm, adjustment of this being by means of shims or different length spacers placed above and below the rod end. The purpose of this is to allow bump steer adjustment by raising or lowering the outer end of the tie rod.