On reflection after reading many many posts on here and HAVING been a RLS sufferer I think you COULD be barking up the wrong tree . Almost every post I read talks of drugs , supplements or methods of easing your suffering but I think it possible there's another way .
I Had RLS because I started doing something that caused it , it's not hereditary it's caused by something . I started taking an anti depressant and for months had RLS until a freind told me anti depressants can cause my problem . I stopped taking them and days later it was gone forever . Can I suggest you look back to the onset of your RLS and look what changed in your life that week , probably an intake of SOMETHING maybe not medication but something that sparked this neurological response . I don't know , it worked for me just maybe it can work for you . Look closely and maybe something changed for you around the time you got RLS , sorry if this sounds bunkum just a suggestion for all you peeps that have my deepest understanding and sympathy .
John