file my own Missouri quiet title??

[Nathan Woods]

So a while back I decided to try my hand the local tax sale and I won a $2k blind bid on 3bd/2bth house that was habitable(shocked I know me too). my real estate lawyer told me we would just do a quiet title action to clear the title so I could get a loan against it as the chain of title has warranty deed with the last seller , well its now been 5 months and he is basically blowing me off saying he will file it next week every week. Now Im thinking that I could just file the lawsuit myself and be done with it but after some reading and research Im wondering should I include all the previous owners in the chain of title or just the last warranty deed owner on record? Has anyone else ever thought about this or should I just go get another lawyer?