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Thanks for your response!!
Measuring slip via shift time and shift time error getting about 1.1 shift times into 4th even with 600 commanded line pressure it limits the slip to about .8 have it...

I should point out most stock boxes have the same slip i just thought i would kill it
im going to make some more modifications one by one see what combination does it booster next and tighter band...

Hay all
curious to all others who have built and tuned there own box
Initally when i built mine i left out the return springs of the 3rd 4th clutch assem and the master over run clutch check ball...