Quote Originally Posted by newcan1 View Post
Not an option - I have owned it for years and paying someone to fix it would cost more than it is worth. It's OK as is - if I can't tighten the rear lens, I'll just live with it.
Lens spanner is less than 30$ at micro-tools. Since you don't have much to lose you can dig into it. Honestly just tightening down the rear retaining ring for the last element is a 2 minute job provided its accessible. If it requires removing the rear cover well that's gonna be more work but it isn't going to require cracking open all the elements or anything.

This lens should be sharp.