I have the same t300rs problem too, where the wheel doesn't go past a certain degree, and it goes to a max of 2% and 97.7%
Maybe I should see if I can somehow set it past 1080°, like to 1105° 
Although I think I can live with it, it's not giving me too many problems (unlike the g29) in any game. I'm playing Dirt Rally, FM7 and F1 2015 and the times I'm eating a wall it's due to my lack of skill, rather than the wheel.
EDIT: I once forgot to attach a wheel to the base before turning my pc on, is it's a problem? it did the checks as it normally would, and I attached the wheel as soon as it finishes spinning around. maybe i'm too paranoid.
Last edited: Nov 14, 2019