Hello-
Your hydraulic leverage ratio is (54/36)^2 = 2.25. By contrast, stock Ghia fronts with the rotohub rears is (40/34)^2 = 1.38. Yet, you are locking up far more _frequently_ than those with rotohubs...
...this is not a good sign...
I'm fairly certain that there's something else wrong with your setup. A bias valve may bandaid the problem, but it's still there. With that HUGE of a change in bias ratio (from 1.38 to 2.25... that's 63% more!), your fronts should be locking up all the time.
Take care,
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Shad Laws
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