ok this is starting to drive me nuts now.

right handed bowler. med revs, med-high speed, low-med tilt.

should my MB be located right of my thumb or left of my thumb. my track seems to be left of my thumb.

i am getting mixed answers from people around me and especially from pro shop operators.

could someone PLEASE clarify this issue for me
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My current arsenal includes:
Columbia 300 Perfect Rival
Storm Reign & Natural (best ball ever)
Nu-Line The Gauntlet (my favorite)
900 Global Break Out (my new toy)
InSite Revelations
Ebonite The One (reunited and it feels so good)