Radio Buttonset Scaling

Radio Buttonset Scaling

Hi,

I'm trying (for the first time!) to create a Radio Button set.

The body text is scaled using a pretty standard "body { font-size:62.5%; }"

The buttonset which is created has unequal button borders. The line which separates adjacent buttons appears wider (2px) in some places than others.

Has anybody else come across this? Is there a fix? The default body text size looks perfect, if a little large, with a 1x seperator.

Any help much appreciated.
Andy