Just wanted to share that. I had a Brooks that was too soft, probably from the olive oil I retardedly put on it. I maxed out the tension bolt. Found out you dip it in boiling water for a few seconds and the baby hardens up. Might be useful if you have a leather seat that's too squishy. Just do it very quick, like 30 seconds and it's like you have a new seat again. It's probably significantly if not severely weakened, but in this case it made the seat usable again. Baboom.