With plastic, soak them in hot water from the tap, not boiling from the pot, and they will become more flexible and install easier, but stiffen as they cool, using plastic levers, like old ladels and forks from the kitchen as prying agents, will keep you from scratching the finish. Not plastic forks and spoons from drive thru's, although they might work in a pinch, but will break, just short of attaining your goal.