How do you adjust them?

If they are the ones that give a wide spray rather than a jet - you can't. I suppose the only thing is to check they are seated properly.

Yea its like a wide spray, one bit too hi and other bit too low.

They might be partially blocked, particularly if you live in an area with hard water. Try a search for info about cleaning them out. Or has the scuttle panel been removed recently? It might not have put back right.

officially they cant be adjusted, both of mine were spraying to high, so i just popped them out, and when i reseated them i just made sure the back end wasnt seated as far down as the front (back end being the opposite end to the sray bit, not the back of the car)