Help with a sed command

I need help with a SED command that will perform a translation for me.

I have a file that has 1000's of lines where I need something changed. The beginning of each line that needs to be changed has a common pattern.

CA0 02346401274108 BEAM KAYLIE A 20020511F

Each line begins with CA0 and the information I wnat to change is the 20020511F needs to be F20020511

I need to move the last character in that string to the front of the string.

I can't use cut and paste since there are other lines in the file.

sed '/^CA0/s/\([^ ]*\)\([^ ]\)$/\2\1/'