Kia Sorento Timing Belt Replace/Remove

I Had A Bad Timing Gear On My Car Listed Above It Is A 3500 Lx Model And Removed Timing Belt. Will Install New Belt But Need To Know How To...

Is It Necessary To Change Timing Belt At 60k., Just Because Kia Dealership Recommends This? They Seem To Be Very Anxious To Do The Work.

Hello, I Am Replacing My Timing Belt And In The Process I Managaed To Strip The Hole Where The Tensioner Arm Is Screwed In In A 2005 Kia...