So it looks like I have the death rattle on cold start. I know the TSB that was released and everything. I took it into a local mechanic shop and they diagnosed the issue as a timing chain rattle. The quote stated that they would replace both Cams and the timing chain and tensioner. The quote was 3k CAD. Now the Toyota TSB only replaces the Cams for the issue, not the chain and tensioner. My cars got 137k KILOMETERS which translates to about 87K Miles. That seems WAY too early to do a timing chain. Should I trust the mechanic or just opt for the cam to be done?