Is this process of replacing the strut cartridges, better left to the shop? Never have messed with them before, but does not seem to difficult, however my friends here are giving me the same look as the front windshield job on the 2002. And that one I will never do again. Thing is the slightest hole or raise in the road causes crazy up and down movement...and coming out of a turn and hitting say expansion crack is right out dangerous, however it steers tight and does not wander, or have any crazy tire wear. Thanks for the help