Rares

I need help with 3 questions: 1) As an engineer, how do i repair vehicles? Or how do you repair them in general. 2) How do i load the map in the editor? 3) How do you set up a dedicated server? Thanks for the help. Great mod by the way. Also i have a 1090T processor and 12 GB DDR3 RAM , and when hosting a normal server i keep getting 6-10 fps (14 players) and 33% CPU usage. Could it be because the vehicles spawn is set to "Insane"