Carl Dvorcek has been a member of The Steel Guitar Forum since its inception. Before that, probably in 1996, he sent me the copedent for his D-12 pedal steel. The extended E9th is not unusual, but the C6th has features that I’ve never seen elsewhere, including a high A string!
A text version of the E9th chart is also available.
Pedal tunings are tempered as follows:
LKL +F @ 433 LKV +G @ 439.5 LKR -A# @ 439 1 +C# @ 436 +A @ 438.5 2 +A @ 438.5 3 +F# @ 437 +C# @ 436 RKL -D @ 439 --C# @ 437 RKR -D# @ 438
A text version of the C6th chart is also available.