Cam degree close. Enough?

Installing Hughes 3842AL 110 cam in 5.9L stroker. Using a ProGear camdex timing set with 3 keyways 0* , 2* adv , 2* ret . The lsa is 110 and recommended centerline is 106. After doing the cam degree test w 0* key, center was 104. Then 2* advance yielded center 103. So then did with 2* retard and got 110. So question is whether 104 centerline is best I can get. If I get OFFSET cam key, could that improve it. Thanks for help.