I too am a relative newcomer to the 'scale' or 3 rail scale ordering process as these PA'a are my first 3 Rd Rail product. There is nothing that I have seen on their site about options for ordering extra parts, but it may be there as I am not very familiar with it overall.
If unavailable, I'll probably add plastic or balsa to the opening and repaint the supplied pilot. If it wasn't for this Forum I would not have become aware of the (supposed) availability of the 2 rail pilots for separate order...
Thanks for the info fellas!
By the way, I have written to them asking if the 2 rail pilot could be substituted with my order.
I would think that most buyers of the 3 rail models would probably prefer the scale pilot on their lead units and that the lobster claw would be the exception!