i got a 2003 v6 ponny.. the lase few days i started to notice that my car is shaking more than usual when she changes gear ..you can really notice it when she goes from 1st to 2nd...also when is in parking and i shift to drive the whole car shakes.....i know this can mean two things ....i need new motor mounds or a transmission flush....but the car is a 2003 so idk if motor mounds would be bad even if this sounds like the logical reason y the car would shake like that....or would the flush do the job?