realmaverick - 10:05 am on Jun 14, 2012 (gmt 0) [edited by: tedster at 10:07 am (utc) on Jun 14, 2012]
Totally agree with Tedster. Don't be afraid of 404s. Many people are but they are perfectly natural and won't cause an issue. Have a great 404 page to keep users on site.
I also know exactly how you feel. I have improved every area of my website and I'm still searching, every day for possible problems. I really am clutching at straws. Google could at least be decent enough to point out the issue.
[edited by: tedster at 10:07 am (utc) on Jun 14, 2012]