I had a bad experience with Gates hose a LONG LONG time ago, and I used to SELL Gates products.
My 70 RR body, in the last years I owned it, had a 340 swapped in. I had scored some braided line, and the ONLY rubber line in the fuel system was about 3" of "store" Gates hose between the fuel filter and the carb, at a slight bend, maybe 10-20* bend.
One day after work, I started the car, and though I smelled gas. I don't know why I did not shut off the engine, but it might not of mattered. Opened the hood to be greeted by a fire. It wasn't TOO serious, but it DID cook part of the underhood harness. So that week I had the harness laid out on a table, replacing each wire one at a time with some surplus teflon insulated, silver plated wire I had. Only RR in the world that had "all white" color codes under the hood.
THAT PIECE OF GATES HOSE WAS LESS THAN A YEAR OLD!!!
