I'm about to get my house roof re shingled and contacted BellExpress Vu who said they could schedule an Installer to re calibrate the Dish the day after the shingles are done for a $75.00 charge. Now the Roofer has agreed to remount the Dish once the job is done. I have a ladder to climb the roof, but one of my knees requires surgery. Is there an easy way to re-aim & set up the Bell Dish possibly with the Roofer?