Hi Tom, re:

> So I thought if it maybe possible to run over a script similar to "MarkCurveMatchingEnds"
> which will "DisplayCurveCommonPoints" to ensure that the respective curves do indeed
> touch each other in one point.

If I understand you correctly, you can select the 2 curves and use the Construct > Curve > Isect command which will intersect the 2 curves and should give a point object at areas where the curves are within 0.001 units of each other. I'll take a look at your file here next.

- Michael