This is very difficult for you.
You could try another vet, and see what they have to say.
I thing this is what i would do
I know how you must feel. If something happens and you didn't take him you will feel really bad!!!
Like you said on the other hand you don't want him to have anesthetic unnecessary at his age.
Sorry i cannot be of any help. Lets hope you will get some more reply' s tonight.
Let us know what you decide.
Good Luck

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