Mike, congrats on the good times. I like those consistent 1.8x 60fts(the first 3 at least, lol). I have a few questions.
Why did you let off in the first run?
How much time passed between each run, and did you use ice to cool down the s/c?
I wish you were running the 185 mm pulley.

Do you have a boost gauge so we know what your max psi is?
The fact that your first time was so good for having let off makes me wonder if the s/c was cool as it could have been on the other runs?