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Yes I did calibrate SPL, it was fairly high though 96.

I went to collect the data for you and everything ran fine this time.

I'm little confused over what levels I can adjust on the soundcard (External USB with analog controls in my case) after I have calibrated the sound card. Can I change Mic input sensitivity and output level? I would assume I could because these devices have no relation to loopback levels.

What should I target the handheld SPL Meter for (i.e. Stereo system volume) during REW SPL calibration?
If I target 75, then when I measure it says signal is way too low. So I end up calibrating fairly.

I keep playing with Speaker Output and Mic sensitivty I sometimes think I'm lopsided and cause problems.

Last night when I had trouble I was calibrated at SPL 96, this morning I calibrated at 85.

I still attached what you asked in case you see anything wrong. I did an impulse with speaker connected and one with out to get a baseline of what the Mic was picking up with no signal. Last night it was much uglier than what's attached. Way less flat with big peaks punching through at 60.

Thanks for the quick response.