I know 4 wheel manual drums are never going to match discs, and I'm okay with that. But the brakes on my 68 are worse than they ought to be. I've done the complete brake job (wheel cylinders, rubber lines, linings, hardware, etc) which did improve the overall feel. Brakes were bled, pedal isn't spongy. But as was the case before I did the brakes, I still don't think I could lock up the wheels with both feet on the brake pedal, even if I eat my wheaties. What am I missing?