are my fans too restrictive?

ok....here is a pic of my fans...they are 2 10" zirgo fans....this relates to my overheating problem (flex fan: hot in traffic, 180 all day moving; electric: 190 in traffic all day, hot moving)
i figure maybe they're blocking too much airflow and maybe i should cut off most of the arcs between the support bars to open them up a bit.....