This may be on here some where. Very close to Alton Browns of Good Eats.
4 1/2 to 5 1/3 lb. roast.
4 talbespoons each of kosher salt and ground pepper.
2 tablespoons canola oil
Dry age roast in frig. for 3 days: Place roast on small rack place rack on cookie sheet. Cover loosely with paper towels. Leave in frig. for 3 days, changing towels daily.
After day 3 remove and coat with oil then salt and pepper. Preheat smoker to 225 deg., place in smoker until internal temp of roast hits 120 deg. (aprox. 4.5 hrs.). Turn off smoker, open smoker door then close, leave roast in smoker. Preheat home oven to 500 deg., after 20 minutes remove roast from smoker an place in oven for 10 minutes. Remove from oven and cover with foil for 15 minuts before deboning and slicing.