Just had front brakes and rotors installed by a local shop. Passenger side axle now leaks oil. Shop says this is normal because the axle had to be pulled to replace the rotors and will stop soon. Any ideas? Another problem-put truck in 4X4 Hi the other day and it started hopping badly while turning-worse than normal in 4Low. Took out of 4wd and still have some hop while turning tightly. Thanks for any advice.