The BitX40 with the Raduino is a pretty neat rig and I still enjoy mine, particularly as a temporary mobile rig with a mag-mounted hamstick. The first thing you might do, Ted, is to install some upgraded software. Allard Munter. PE1NWL, wrote a wonderful sketch that does not require any hardware changes and fixes some issues on its own. Little things like tuning "clicks" and stability are vastly improved. Additionally, he has a number of very simple and well-illustrated hardware changes that add more and more functionality. You need only to install the free Arduino IDE software on your computer to compile and load the "sketch" to the Raduino, and it is fully reversable as the original sketch is also available n Github, but I doubt anyone ever goes backward. You can find Allard's sketch and documentation here:
=Vic=
Vic WA4THR