Hi folks, new member.Can anyone help me find differential parts for my 89 dolphin.End of last summer going up a hill i downshifted to 2 gear the same time trans downshifted,so i ended up i first gear rear tires locked up.After i now have a howl commin somewhere out there in the back,shifts and runs fine other than that.i suspect diff bearing,Also if you know a repair guy in nh would be nice.warming up gotta get it going, TY bruce