Finally got a chance to test the spacer with the new MPCC. Following a number of steps from 53mm up, I was surprosed to find the MPCC worked best with 59.5mm spacing vs the advertised 55mm. Overall I am very happy with the way it is working.
Here's the final test image CCD Inspector report, a test shot of NGC3324 and a 100% crop in the top right corner.
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