Cool game. Under Stats it says "do not record numerical stats" but you need them when rolling on the service tables (e.g. DEX+1).
I do not currently have any revised tables that represent the removal of numerical values for occasional results. That said, I recommend simply replacing any STAT+/-1 results with narrative results, like gaining a new keyword or interacting with an NPC or taking a risk (perhaps a 2d6 vs 7/9 throw) to determine an interesting outcome.