I bought new front struts for my 2004 honda civic. They are gabriel ultra ready mount. They are were installed earlier this year. The issue is there is a squeaking sound coming from the front right strut when turning and the front left strut clunks when driving as it moves up and down a little. The front left strut assembly looks fine accept where the shock piston shaft comes through the upper mount. The rubber around where the nut attaches to the piston rod is torn. I sprayed some silicone lubricant in there and the clunking stopped. The front right rubber is not torn but is starting to crack. Is this just a thin piece of rubber molding around the shaft that will crack or is it not supposed to crack?