The tech would have rather done a new motor if it was an option. They were backed up 3 weeks before getting to it. took 2 weeks to get done.
A big prime rib will continue to cook after you take it out of the oven, so for a final medium-rare temperature of 130 F you need to take it when it reads 120 F on your instant-read thermometer. Note that the U.S. Department of Agriculture recommends all beef cuts be cooked to an internal temperature of 145 F.
Turn primary burner down to medium; turn off other burner(s). Place the ribs over cool part of grill. Cover and cook, turning every 30 minutes, 21/2 to 3 hours until meat starts to pull away from bones. Temperature inside grill should stay between 220 and 275 degrees. Remove ribs; wrap in foil.