I have a 2006 Ford F150 FX-4 with 81### miles. Ive had this truck for 10months now and i love it. I bought it stock with 68### miles and ive added a 2.5 leveling kit (Sept 2010) and 20" Rockstars (Feb 2011). A few weeks ago i noticed my trans bein a lil jerky around 45mph, like it was goin in and out of OverDrive (my O/D hasnt flashed once). I talked to a budy of mine and said it may be an OD sensor but he wasnt sure. It doesnt do this all the time but its enough to make me wonder. And the other day i got in my truck to go somewhere and i pulled it down into Reverse and gave it gas and it was like i was in Neutral, i had to put it back in Park then pull it back down into Reverse and it was fine. My transmission fluid is fine so im wonderin if its something minor or if my transmission is about to go out. Any thoughts will be highly appreciated.