Ive noticed a slight problem. When i start moving from a dead stop i feel a thump almost like something is rolling backwards when i start to move. Never happened before. Another thing i noticed when im driving is if i have my han don the shifter and give it some gas i feel the shifter move probably like an inch to an inch an a half. I think its the front motor mount that went bad causing the engine to flop a lil bit. Im not sure any ideas??