Wrong flex line?

kittypancake said
Replacing 9" drums with KH 4 piston discs. The flex line i have doesn't fit through the tab welded to the sub frame. The tab and original flex line have a flat spot on one side, I presume it's to keep the line from spinning. The disc brake flex line does not have the flat spot and won't fit through tab.
My question is... do i grind the tab hole round, or do i look for flex lines that have a corresponding flat spot?

If the hose is the right length and works other than the one issue I'd file the hole to fit. Shouldnt need to remove much material.
Unless your worried about "originality".
I had to file a couple notches in the tabs on my 72 Demon.
Much simpler than trying to return the hoses I had and hunting for the "correct" ones.
"correct" doesnt likely exist as I was putting single piston calipers on a 72 A body.