For the past couple days my tranny has been acting funny. When i put it in reverse and let the clutch out, the car kinda jumps and acts like it's going to slip outta gear. 2nd gear feels very weak when i start out in 2nd. Also, last nite the tranny was making a lot of noise, kinda like a ticking or grinding sound. Is my tranny crappin out on me? It was either replaced or rebuilt about 2 yrs ago and before I bought it, can't remember.