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Not really a go-fast trick so much as a get-you-back-out-on-the-track trick:
If you are in a spot where you have to work on your brakes at the track and you can't find any new copper crush washers for reassembly, do this:
Set the used copper washers on a piece of steel and fire up your propane torch. heat the washers for a few minutes until you see that color-changing effect as you pass the flame back and forth over the copper. Turn off your torch and let the washers cool off by themselves. DO NOT quench them in water. The slow cooling of the washers will anneal the copper and they will seal better when you go to reinstall your brake lines. Now, go spend 5 or 10 minutes asking around in the pits for new washers. If you find some, then great. If you don't, just put in your annealed washers and you'll have a better chance of not having any leaks.
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