Hello to anyone that can give me some advise or put me on the right track . I I been having trouble setting my e brake on my 1940 1/2 ton pickup . I have all original brake drums and parts no up grade done .I can’t get it to lock my brakes when applied. Have it routing thru the two wheels mounted underneath the frame then going into the brake drums . Does this paticular year take some kind of Clevis and where would it be installed ?