I have them set about half way. Not sure if you read the hole thread, but i am so peed with the harsh ride i want to change my set up but i want to stay fairly low.
Well they are very hard and crashy. Lets say driving everyday is a pain. They "clonk" a bit but not as bad as you describe. I would suggest that if you have them wound right down they may be rubbing and banging on your ARB/Driveshaft. Or rather making your ARB rub on your driveshaft!