My expierience with big locos

[modelsof1900]

The rods didn't stay in their sunk holes.

If possible, remove the rods and the black plastic sheet, then solder the rods to the brass sheet through which they pass - you may have to remove or modify the bent-over ends. After doing so, you can then cement the black plastic back in place.

Doc, I think that this will not work. The bolts must be movable at the gliding plate. This plate will swing if the engine rolls into a bow. And there is a many more difficult problem if engine and tender moves literally against one another, in a switch connection as a sample.
But I do not have an idea for realisation, sorry! Maybe however that these bolts should be moveable connected to the pressure plate like heavier eye bolts?