No problem. I recently did the same thing. The question really now comes down to this: If I split the difference between the 3 respective pins, it would be 1/32 of deviation at each pin. I'm not even sure it's worth the additional thought. I'm going to re-measure one more time tomorrow to ensure I obtain the same measurements as I did today. I will update once again tomorrow.
The sequence of measurements seems to matter.
Also, I realized tonight that the tram measuring tape has some slop when opening and closing. That may have contributed to the inaccuracies last night as well. NEW TOOL = learning curve.