I have a 2011 5.0. And just recently started having problems and they only seem to get worse. Sometimes I get locked out shifting between gears…but all gears shift fine .. I have to pump the clutch then push it into gear and 4th gear goes in fine driving normal. But feels weak & its grinding bad…getting worse by the day I just ordered a MGW race spec short throw and some Royal Purple syncro fluid. Hoping it helps. More than likely. I might have to drop the tranny out and have it rebuilt. Looking into rebuild with AMP performance parts. Anyone used those before???