Don,
When I get a minute I'll check the rear brake settings. I think all that I need for the rear is to adjust the bias. Interestingly all of the pedals are at about the same height; clutch, brake, accelerator ... I like where the pedals are (except I'd love to move them forward about 6").
The brake is not spongy or anything. The car just doesn't stop like my Mini Cooper. (Then again, the Mini doesn't "go" like the Cobra either!)
I've got the measurements that I took of the original pedal and the new pedal:
original: 12" length (to center of the pedal pad), 3.75" from upper pivot to brake arm. Ratio: 12 / 3.75 = 3.2
new: 10.625 length, 2.25 to arm. Ratio: 10.625 / 2.25 = 4.72
So, unless I'm measuring something wrong or something, you're getting an improvement of 1.5 with the new pedal assembly -- a 150% improvement!
If I get a minute I'll see if I can sketch something that will give me an idea of the change in pedal height based on the positioning of the mounting hole. Since the pivot point is lowered, the movement of the mounting hole is going to have an effect on the angle of the pedal (because the brake rod distance remains the same). It's one of those things that I'm going to have to draw out to understand the angles involved.