the accumulator sphears have gas in the top half this is isolated by I think some sort of membrane, such as is in citroens. the gas being compressed by verticle motion of the wheel compresses the gas, when the gas goes away in time there is nothing to dampen the movement,thus a choppy ride.the sphers are not expensive and easy to change,I have done it on my wagon.but with the leaks you have, your going to have to repair the struts.did you check for any hose leaks.do you know what fluid is in them, a wrong fluid could cause them to fail.I used shell aero 9, excuse my terrible spelling. one thing to do,is wash those things well with some soap and water, then throw talcuum power all over the area. start the car bounce it up and down some, get a flashlite, and try to pin point the leaks. good luck.miker