I noticed the Jeep was getting hard to shift a few months ago and have just kinda lived with it. The syncros aren't lining up or how ever you describe that, I am considering just upgrading to an nv4500 but figured I would at least look into having the nv3550 rebuilt,(it only has like 20K on it?) any recomendations on shops, quality/ price? I don't want to wait till it goes to have to decide.