I am suspecting that the tires, are of bad quality or that the geometry of the steering system is wrong.

My quad feel really light at the front, lots of understeer. I drove a Out 800, and a Rincon 2006 in the same condition and it is very noticeable.

Should I try to reduce the pressure in the front tire ??

Do you experience the same thing. Its not that it is a problem, just need to be more carefull on slippery surface and BTW I have stud in my tires