Hi, i have 2 questions and i hope that someone can give me a anwser on these.

1) For the last 2 months i have a problem with my transmission,
When i shift the gears from "N" to "R" then my car gives a hard
shock. And its the same when i do this from "N" to "D"

2) Last week i have changed the springs of my car, it was lowerd and now i have put the standard springs. The problem now is that Rear is standing much higher than the front and it looks like a drag-racer. How can i fix this

Thanks in advance,

Greeting from The Netherlands.