i dont know about problem one.
have you tried checking to make sure there isnt anything jammed on the inside of the actual peddle.
for question 2 try going to options and turning the wheel to the left fully then the right fully and then put it to the middle. If the wheel in real lifes in the middle and the little red bars lined with the black bar in the middle then you have it sorted.
if it isnt try calibrating it in the logitech profiler that you should get on a disc with the game.
if you dont get the disc you can download it from the logitech website.
heres the link.
http://www.logitech.com/index. ... nloads&tabs=1,3,2,4,5