Thinking of going to E85 on the Dart

I have two mopar buddies here in Wis. that did it only to change back to 93 octane with a little 110 mixed in.They sent the carbs to some guy in Indiana who did the conversion to find out he screwed both carbs up,Then found another guru and fixed the carbs,Cars were set-up with a/f meter and they thought they were good to go only to find out they DID have to always play with the timing and had a hard time getting the engines to run right---Then come to find out--The proper way to run any high performance engine on E85 is to TEST the fuel EVERY time you get gas!!!! There are NO set standards on the processes of making E85 and different plants have different mixes should we say.So they are back to pump gas--GOOD LUCK -Let us know how it works---Check out mopar muscle mag. they did a article on this and found the same thing,You have to test the gas EVERYTIME you need gas--Steve