If he won't sign the waiver, get him served with citation.
I am not intending this to be legal advice, because I don't know the particulars of your situation. Call me if you would like to discuss this or other isues.
I agree with Mr. Moore. Based upon the nature of your questions, I think you need a lawyer. Since there is no property or child of the marriage, your legal fees should be reasonable, and might be affordable through payments. Your best option for getting this accomplished is with assistance.
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I agree with Attorney Langford. If you just want a divorce, you need to have a citation issued and serve him with process, whether it's through a constable or a private process server. Then you're going to have to either draft a decree yourself or use a form one. If he doesn't sign that, you're going to need to have a final divorce hearing and submit a proposed property division for the judge. People have a habit of showing up to those, even if they haven't done anything else in the divorce.
I'd strongly recommend consulting a local attorney. You've got a relatively simple divorce and a lot of younger lawyers will work with you and take payment plans.