+1 on the hand shuffle and not ever crossing hands when turning the wheel.
I take it there are no mechanical issues with your power steering (rack, pump, etc), so that's not a factor.
Maybe some of it is what you are used to from other cars. For 12 years I had a Porsche 928 S4 and it was VERY difficult to park. Poor visability, virtually no power steering assist at low speeds and a steering ratio that only felt right when going over 100kph. It was like parking a school bus. When I first got that car, kids in their little Honda Civics had a chuckle as I would struggle to shoe-horn the thing into a parking spot. Then I got used to man-handling the car when required.
The Ralliart's steering is a joy in comparison. Nicely weighted, and not too much power assist.
Seating position helps as well. I use a track driving position all the time, not just for lapping. It takes some getting used to, but makes wheel control much easier.
http://www.drivingfast.net/track/driving-position.htm