i'm also trying dropping the 11t cog (that i never use on trail; guess i'm that slow) instead of the 17t, so i've got a properly stepped 13-42 cassette.
ok; found a random 16t cog in my tickle trunk of junk, so kept my 11t cog (ie, 11-13-16-19…). just for you, sethimus. using the second position 13t cog in 1st position isn't a great idea anyways, as it's catching very little spline. probably would have sheared off my aluminum freehub body in time…
also spaced my chainring inboard a bit further (moreso than the already offset wolftooth 30t). the crossover to the 42 was pretty gnarly; figured i'd try to mitigate wear a little.