Kindly solve this Mental Ability sum
Abhay, Balwinder, Chander, Danish and Eknath decided to play an innovative game. They divided a circle into 8 equal parts and numbered the parts clockwise, from 1 to 8. The conditions decided for scoring were as follows - Starting from No.1, if one moves a step clockwise, one just adds the number in the next slot to one's current number to give one one's score. If one steps anti-clockwise, one adds the number in the slot but substracts 2 from the total to get the score. Of one moves to the number diagonally across, one adds the number to he score but subtracts 3 from the total. One can't move into a slot already used.
All the replies will be appreciated.
If you give full solution, I shall be grateful, but if you are in haste, just drop a hint or cue.
Thanks in advance!