Dear Charlie,
The number in the output name is the output gage number, not the node number. You’ve set NTwGages=2 with TwrGagNd=1,6. Thus, output TwHt1MLxt is the side-to-side moment at node 1, TwHt2MLxt is the side-to-side moment at node 6, and TwHt6MLxt is invalid. Likewise, you’ve set NBlGages=1 with BldGagNd=8. Thus, output Spn1MLxb1 is the edgewise bending moment at node 8 for blade 1 and Spn8MLxb1 is invalid.
Best regards,