Thanks all for the great replies. I took pictures of each of your suggestions as I understand them. Please let me know what you think.

I did swap 1 and 5 pistons, as Jerry suggested (can see that in pictures), and results were very similar to original.

Techinspector1, do you think I'm ok or does the difference with the indicators at 3 o'clock and 9 o'clock indicate a problem as you mentioned?

I have a description with each picture which I hope is helpful.