I bought an 18 lb prime rib and cut it in half so I wouldn't be up all night. Anyway, figured on a 4.5 hr cook, well it finished way early, I was figuring on a 45 min rest on my way to the party, but it finished about an hour earlier than planned. I pulled them at 132 deg double wrapped and then in foil pan covered in more foil. I put that in oven at 130 deg. Should I do something different? Party is in an hour and 45 min, how can I make sure it stays juicy. Thanks inadvance