It takes two back-to-back elements to define a bend. So if you're looking at the Spreadsheet or the List, and the in-coming tangent to a bend is defined as 140-150, then the very next element (the out-going tangent) must be 150-xxx. Once 150-xxx is defined, you can then jump anywhere else in the model you want.
If the in-coming and out-going tangents are not back-to-back, then the bend won't render, indicating the problem.
For what you're doing, I think you can just "insert" one element to finish off the bend (the 150-xxx element), then jump to the end of the model and pick up coding with 'xxx'.
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Regards,
Richard Ay - Consultant