its about time to do my spark plugs... i should have asked this before but i bought them... i'm going to be going back and forth from e85 to 93... run 93 on normal days and then other days run e85... according to jim in tuscon.. he recommends running

https://www.evolutionm.net/forums/sh...&highlight=e85


BPR8ES gapped at .020/.019 would i run into issues while switching fuel? or should i just sell these and run different plugs?