Well here is my setup i have the +6 widding kit on the front and a +7 i think on the back.Is it better to have a wider rear or front for the trails?I could take out the spacers on the back...Just wondering 

its better to have the front just slitley wider than the back..like an inch or so
I personally agree with ^^^^^. However, I have noticed that some riders are starting to have the rear set equal to or slightly wider than the front. This may be for stability I don't know but I know that I prefer a wider front for the better steer qualities.