There is no need to locate and prepare the center mounting pad with this system. Kit includes: EZ-set torsion spring, torsion tube and coupler, drums, cable assembly, EZ-set winding unit, EZ-set end bearing, mounting brackets, fasteners and instructions.
This system was so easy, it took me about 3 hours by myself to install. I had heard stories of people getting hurt by the winding springs, this system has NO worries with injury. The directions are a breeze.