You need something to cut the pressure to the rear drum brakes to keep them from locking up before the disc brakes do. Drums take less pressure than discs. Front Range makes a replacement valve:
- http://frontrangeoffroadfab.com/nfo...;osCsid=2b4998ac05b932eb8cb53680c1e258ee

Or convert the rear to discs and it may be OK w/o a prop. valve (probably good to have one though).

r.c.brown@ieee.org
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Project: 4Crawler
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