Thanks for shareing the chart Dirty. Good information.
I have somewhat of an update. Talking to a local shop that does TONS of E85 cars, they've seen this before on cars with blowby or poor oil catch can set ups. Basiacally the oil mixed with the fuel and causes the sludging. My car was just running one Cusco can, at the same time the motor was built a little on the loose side, It did see some blowby. So that scenario is plausible.
I dont mean to scare anyone away from E85. Out of thousands of people running it theres only a handfull of people who have expirenced this sevre gunking. So its still a risk i think may be worth taking.