Help with sliders

[Erlendhg]

Hi.
I have made my own sliders (without subclassing QAbstractSlider), using QGraphicsView to draw the sliders.

I must have missed something, or done something very wrong, because when I connect the sliders to rotate on the 3D sudoku board in my application, the board rotates just fine, but the sliders does not follow the mouse very well. They sort of "hang" after.

I know it can be hard to help, since I cannot post the code of the sudoku board, but if thought that maybe there could be something in my code that is obviously wrong.

Thanks a lot