Mso help please

I bought a RZR off an individual a few years back , he was suppose to give me the MSO on the vehicle . Long story short , I dont have it ,I live no where close to this guy now and dont even know how to contact him. I know where the vehcile was purchased but they have closed down. I am wanting to trade it in on a new ride but no one will fool with me without a bill of sale or MSO. In ky where I live we are not required to register the vehicle so there is no real need for a title. Does anybody know how I can get a copy of the MSO or even get a new one put in my name ? I have contacted the local clerks office and the vehicle has never been registered in this state so I dont know the next step to take toward getting a copy of the bill of sales or a MSO . Any suggestions are greatly appreciated .