You can also try a 'double sandwich'. 'Metal, wood, faceplate, wood, metal' or 'metal towel double over faceplate towel double over metal' in a vice squeezed tight. I've had success w/the BFH and hard wood blocks as well. I think you can get that 99% straight, but if you're satisfied then move on. BTW, don't forget to leave appropriate feedback, notify the seller & try for a partial refund.
Did contact the seller, and he was more than accommodating and sent a very quick, and reasonable partial refund.
Got sense that he shared our passion for vintage hi-fi and was genuinely bummed out that the Marantz suffered injuries on it's journey.