When I slip my foot off the brake pedal and there is still some play before the pedal reaches its maximum extension there is a metal to metal sound which I believe is due to the rubber padding on the end of the bolt that stops the pedal being worn out. I dont think the brake system is compromised in anyway, but the sound is annoying. I am 87 years young and getting under the dash is a challenge, to say the least, so I was wondering if anyone out there has replaced the bolt in question. From what I could see from my pretzel position there appears to be 3 different bolts in close proximity to one another. Appreciate any guidance that can be offerred re: technique to replace the bolt and of course which is the bolt to be replaced. I have owned my Z for over 40 years and this is only the second time something mechanical had to be replaced. Last time was a water pump over 35 years ago. Best car I ever owned.