Barry, unfortunately I think they're gone already, dang it! Never would've guessed that would be the preferred method than using new ones, interesting
Rob funny you mention that as I've tightened these beyond what I would normally do...and I've done a lot of brake work since 1984! I went with DOT 4 for this system as it's driven in dry conditions and parked in a climate controlled shop.
There's got to be a work around for shoddy copper gaskets? I've got a leak at the front axle brass tee, and at the 2 larger ones on the master cylinder banjo bolt. The rear tee and front wheel cylinders are good, weird?