Doug's suggestion about rubber hoses is a good thought. Under the pressures used in max braking, rubber hoses swell. I use AN braided-stainless which helps, and going to dash-3 in place of the commonly used dash-4 size helps more. That's old-tech from the Korean war, though. Nowadays, serious go-fasters use lighter weight braided-kevlar hoses, still in dash-3 size. And (personal preference)- I discard any 'residual pressure valves' found in some aftermarket and even performance production master cylinders. Owners install them in (usually front) brake lines for slightly quicker response and also slightly more pad-drag & wear..
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