Hi Eric.
Looked everywhere for any of the Snuffer/Spi setup pictures I have but couldn't find any on my troubled computer.
I also made an error on the spi bail height. We have them set at 31 inches down from the top of the mast ... Not 37. I noticed in your pictures that you are roughly 36 inches from the bottom of the comp tip ??.
As our boats are under two feet of snow I cannot verify this but it would seem to me that your bail/block is probably about 18-20 inches lower on the mast. This would certainly not suit an I20 spi as we are already pushing the lower limit with our setup.
I understand you may have picked up an older style H-20 spi. My suggestion would be to return it to Hobie in exchange for the more modern Tiger chute if that is an option. You may not lose nor gain any speed but will have an easier chute to handle... And snuff!

Sheeting angles would also be more to your likings.

Marc