First try what maxi said: press "/" to get the standard config
Then ty to click the right button on the mouse (rotate it 90 degree) and the turn it with the key button to your direction

Use all 4 option.
There are some blocks, which won't turn arround at first and it depends on: which view you are to the block
and which spin do you have from the block
the view of the block is important to get the right direction with the keys if you turned yourself, so maybe the block will rotate with another key pressing row