Ah, appearances can be deceptive! The radius rods are currently free to move up and down in the curved slots inside the expansion links - they've just ended up in full forward by gravity. I do intend to model them in forward gear, but as near mid gear as the geometry will allow. The reason for the bushes - actually spacing washers soldered to the outer faces, is to give more bearing area than the half etched thickness of the links. As intended in the kit, the spacing washers should be soldered inside the support bracket and the expansion links should have valve gear rivets soldered to the outsides. Assembly then requires the support bracket sides to be "sprung" apart to get the rivets between the sides and located in the spacer washers. I'm just using a fixed pivot of 0.9 mm brass wire - hence the need to increase the expansion link bearing surface. The washers will also help locate the links sideways, as you say. The main drawback of my modification is that the valvegear will not be able to be reversed, although I'm not sure this is much of a loss. I've also wondered about the forward/back combination but, like you, never actually done it and always model my locos in a fairly short cut off, forward position. Dave.