When i press the brake to leave park, i feel a click in the shifter handle, and the same click when stopping, from second to first gear, I've never owned a subaru before this and was wondering if that is ok??? Also when i depress the gas and keep it at any level, as if i was trying to get up and go, the engine will rev up then reach a point where it will go up a little more then back to where it was, back and forth very quickly. Only when turning though?!?! The drivetrain has 81k miles on it.