There's not enough buttstuff in HS so 140 is not enough.There is none - you only can create more positions in StudioNEO, but not for the game
If you can read hereYou must be registered to see the linksthere are > 140 positions - not enough?
But I guess u know that not all positions are usable from start - you have to unlock some by achievement points, and a new girl doesn´t let you do all with her until her feelings are more developed.