Missouri like most states have illerate but right to justice laws
meaning if you go to the court house and start asking for directions on where to get paper work for file a law suit, and how to put the correct information on the paper their has to be someone there to answer those questions. (however there may be a fee for that guidance)
basicly if you go to the court house and polite and ask for the forms for filing a lawsuit someone will probably point you to the correct place.
But you need to know exactly who all you can sue
And what you're sueing the for
among some other things the court forms should guide you through
Start researching U.C.C. - ARTICLE 2 - SALES
..PART 3. GENERAL OBLIGATION AND CONSTRUCTION OF CONTRACT
§ 2-316. Exclusion or Modification of Warranties
http://www.law.cornell.edu/ucc/2/2-316.htmland
Uniform Commercial Code Locator
http://www.law.cornell.edu/uniform/ucc.htmlonce you've read everything there you should be prepared to show up at the court house and start filling forms for your suit
but be aware of statue of limitation... Time is never on your side