If there was nothing wrong with the old ones then why did you authorize their replacement ?
In case you missed class that day, the first rule of auto repair is.....
If it ain't broke , Don't fix it.
or
Leave it alone and don't fuck with it.
Maybe some Monroe Sensatrac's will make it rid rough again. lol
After all, the job takes less that 20 minutes to do. shit, at that rate you could 6 pairs of shocks in under 2 hrs. Ur my hero !