depends on how "un level" were talking about ? the more level the better. when running boards trough planers or a table saw onto rollers it could be a PITA ! at least the epoxy has filled the voids wheels would get stuck in. your floor is what it is and you will have to work with it the best you can !
working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.