On the newer refrigerators, a quarter bubble should be fine... remember, you're leveling the fridge, not the RV. Put the little bubble level on the bottom of the freezer, and level to that. The fridge can be level, and the the RV can be out of level. They are not always the same. If a quarter of the bubble is in the circle, you should be OK.
Dear Wife and Me, in our
2020 Coach House Platinum 271XL FR
5 fur babies