if you are going over relief, then pull the caps off the rods and see if there is a stop tube in the cylinders. some VP's sold to Cobalt had a plastic stop-tube added to not hit the swim platforms
I finally got around to rebuilding the trim rams and sure enough there were 2.75 in spacers in each one! Now i get 10 inches of extension, more than enough for my outdrive to clear the driveway approach! Thanks for all of the input.