I'll back up what Rnm4 has to say. Your question is only good for one thing - Continual dissatisfaction with your system. Be excited that you bought a new toy and you got a (presumably) good deal on a quality, good condition component. Spend time learning about cartridge setup, as this is what really makes the difference.
Also, don't be so quick to ditch the Marantz for something else. You may want to consider having it rebuilt. Give Tom Williams a call at Vintage Electronics Restoration Services (http://vintage-electronics.home.bresnan.net) and chat with him about your receiver and your goals. If you're looking for "bang for the buck" this is something to consider.
Also, don't be so quick to ditch the Marantz for something else. You may want to consider having it rebuilt. Give Tom Williams a call at Vintage Electronics Restoration Services (http://vintage-electronics.home.bresnan.net) and chat with him about your receiver and your goals. If you're looking for "bang for the buck" this is something to consider.