there are a lot of different methods people use when switching fuels....I recently switched from byrons gen2 30% to sidewinder 30%
I richened the top end 3-4 hours (remember riching the top will alos rich the bottom so theres no need to richen the bottom) idle about a half tank through it ..Then I ran a couple heats on the rich side and for he main I lleaned it out to race setting....funny thing is that I am running the same needle seeting qwith sidewinder as I did with byrons.....Only thing I noticed that I got more run time with byrons....I will be going back to byrons for my next gallon..Only switched because I the lhs didn`t have byrons in when I needed fuel