Im having a problem getting the moulding to fit tightly along the driprail and at the pillars. It wants to snap off and I am really about tapping on it. Is there a tool I can use to get the Moulding to snug-up to the driprails? I really don't want to bang on the underside and cause dimples since it's not distorted. Anyone who has experiance here please let me know....thanks.