I have a layout with a single oval loop. I am extending it by placing a parallel loop inside the existing loop. There is a single set of points to transfer between the two. There is no voltage on the inner rail of the inner loop when the points are set to straight, so I assume I need to wire a connector between the inner rail of the outer loop and the inner rail of the inner loop. I thought the best way way would be to link the fishplates shown here However, I am having real problems getting solder to stick to the fishplates. I have tinned the wire with no problem, but as you can see, on the fishplate, I only get some flux residue I have tried leadless and 60/40 solder Any help gratefully received