Try adjusting the angle of the lenses with respect to each other, more -- instead of /\. A few that I got had a strong angle but were much better after I flatte

Try adjusting the angle of the lenses with respect to each other, more -- instead of /\. A few that I got had a strong angle but were much better after I flattened them out. Of course it could be other things like getting astigmatism wrong but it's a quick thing to try out.