I needed to make a few adjustments to John Love's drawings mainly to be sure it had exactly the same dimensions as the model and to correct a few inaccuracies like the width of the RCS access doors which were not wide enough (by about 2 mm) but all in all the drawings are 99% correct and it was a great help in my design. As you can see below after adjusting the dimensions, the Service Module drawing fits perfectly on the model.