I am working on "Old Spinning Wheel". I really enjoy this tune, having heard first on an old bluegrass album years ago.
I have a tab which sets the tune in D (double C tuning, capo 2). If I knew who prepared the tab I would mention it to give them credit for good work. The first thing I did was to convert the tab to standard C which I prefer over double C. As I say, that is personal preference, picked up I might say, by reading the only banjo instruction book available at the time, Pete Seeger's book. Back to the tab. Using standard C helped some, but there were several very difficult chords left to produce, including a C chord produced by fretting strings 4321 at 4555, very difficult for me. Then it dawned on me that the tab never used the low C on string 4. When I re-tuned to standard G every thing about the tab fell into place. The C chord described above became 2012. What had been a rather difficult tab to follow became very straightforward. I write this not to try to change anyone's mind about the Double C. Just a note to point out that the first choice of tuning may not be the best.