I extracted a lot of Cylinders with the boolean modifier. It worked really well except for these 5 cylinders (red) that are still there. Instead of subtracting the cylinder it adds it (picture 3). It even already adds the cylinder before I apply the modifier.(picture 2) When I try the same process on them they either add the cylinder or don't work at all. How can I subtract the last ones??? Is there another way of subtracting the object then boolien?