Why continue to worry about it? Rerouting your brake lines is not that difficult. It is something you can do yourself if you are at all handy. Check the size of your brake lines and you can buy just the steel tubing at any NAPA store, along with the couplers. Then you need to buy a DOUBLE flaring tool, which can run from about $20 on up, depending if it is made in China or in a decent country. DO NOT use a standard plumbing single flaring tool.
Once you use a tubing cutter to cut the brake lines, then you can add additional tubing to route the brake lines away from any heat source. Once you have everything rerouted and securely fastened, you will need to bleed your brakes and enjoy a permanent solution to your problem.
Naturally any competent garage can do the same thing if you do not want to do the work.