my driver side front sup. is about 1 inch lower then pass. side. I lowered the rear and tried to adjust but still dips down. Are there rubber bushing on front leaf that I can get to adjust the height

It is common for the fiberglass springs to go bad, this could be the problem. Make sure you check all ball joints and bushing carefully for failure. The only other thing left is a bad shock that would lose some support. Was the car ever hit in the front? check for a bad rebuild also. Good luck coastal corvette, vettes@bellsouth.net