[tocheck]

Originally Posted by spdbrake

The BDR uses a 1982 VW Vanagon master cylinder. with M10X1.0 ports front and rear circuits.https://www.rockauto.com/en/catalog/...+cylinder,1836
You could add a proportioning valve to the rear circuit. Tilton makes a few in that metric size. Valves - Tilton Engineering
M10 pre-made lines are plentiful at any NAPA store

Thanks for the info Spdbrake. If I can't find anything mechanically wrong, I am going to try new pads all the way around before adding the valve. I had a thought: If that is a vanagon master cylinder, would the master cylinder be biased to the rear? I am really curious if this is a problem any other BDR owners have had, or if it is unique to mine.

Thanks to everyone for the comments and warnings.