Many more details are needed before a proper answer can be given.

Can there be a personal injury settlement if no release was ever signed by the client and no checks were cashed?

yes, if the settlement was confirmed in writing by the parties, or agreed to on the record in Court, either may bind both sides before a formal...

What happens if you miss a traffic court hearing for operating w/o insurance?

Try calling the court clerk and ask to have it put back on the calendar. If they won't help, hire a traffic court attorney to help.

May court allow the supplemented disclosure after it had been served?

Seek court approval. It may be freely given, especially since the Defense rejected your attempt to cure any 'defect' months before the trial date. ...

What kind of affidavit would be best utilized for support of information in a civil suit case before it goes to trial?

you may not submit your affidavit as evidence at trial. Also, there are very few details provided with your question.

Can I file a civil action even though I filed a small claims one?

Mr. Suda is correct. Definitely participate in some manner, either by withdrawing the small claims action 'without prejudice' or appear and do so....

Why am not getting any feed back on my case and can't get another small advanced check for to help with my bills

It sounds like you need to improve communication with your lawyer. Schedule a face-to-face meeting and express your concerns.

Your question involves both Personal Jurisdiction and Venue. If the amount owed is significant enough I suggest you hire counsel. If not, more...

If my doctors are saying my injured are from car accident...Shouldn't it be a higher settlement? And should my medical be paid

Although the offer sounds quite low, you should have a sit down meeting with your attorney for an explanation. If you aren't satisfied I suggest...

How do I proceed from here? He has made his intentions clear and many years of effort on my part could be scuppered.

threats are not yet actionable, but if they are going to affect your business reputation then you may want to consult an attorney to send a letter.