Mdx "clunks" and bounces when going over rough roads. Dealer says left front strut assembly needs to be replaced. Part 51602-STX-A58 which is $1500 part alone and my regular mechanic says he can't install as it is computerized. However Honda says I can buy a regular strut for it that will drive the same for $120 but doesn't have "damper" so a warning light will stay lit. I don't understand the price difference and what the damper and computer part is. I don't want to drop 1500 if it will drive the same. Help.