Audi 2001 a4 Quattro Automatic, Triptronic

All the gears in drive works fine but in reverse it will jerk and then goes slow and then jerks again, sometimes i will put in it in neutral back to reverse just to get me that jerk to reverse a bit more.

I bought it from the auction I don't know the fluid level in the tranny but i will get it checked out.

Any ideas or advice to know what the problem is or do you think you know what it is. thanks!