My results are in agreement with those of the tutorial until I apply the load to the model - I do not get the same shape of the Lm curve (see Lm.jpg). I even tried copying the lines straight from the tutorial but this did not help.
I have just run the same analysis with MuscleDemo.5-2.any (the working model that you can download). This gives the same result that I got i.e. different to that shown in the tutorial. Is this also a case of having a different version as the muscle seems to be working in a different manner? If so can you explain the difference?