The problem in J2ME development is the cost of porting and QA. So my guess is that you will have hard time finding a publisher for your title, since the publisher would need to invest signifigant amount of resources to port and do QA for the title. Also, pretty much all mobile publishers have own porting platforms built on top of basic J2ME, so they would need to "port" your game to the platform as well. So in the worst case they would need to pretty much re-do your game. Plus they would need to negotiate some deal with you, which would cost time and money as well. So unless your game is extremely addictive and it shows in 2 minute gameplay, I think you can forget about finding a good mobile publisher for it.