If you have '69 lowers they may have an extra long brake lug, They made it stick out a little more (1/8") when they increased the width to 6 3/4". If your trees are 6 1/2" it may be bottomed in the slot in the brake plate, would make it tilt the way you describe. That"s my guess.
Just re read your posts and might not apply if you have the wider axle, but still need to check the width of your trees.
Just re read your posts and might not apply if you have the wider axle, but still need to check the width of your trees.