Hi, Does anyone know of an online dealer that may have cartridges for a Fisher MC-4040 "Audio component System" It's an all-in-one combonation cassette/receiver/turntable. It in very good condition but the cartridge appears to have been ripped off.it has the owners manual,45 adapter, and cover. If I get it going I'd like to use it mainly for 78 rpm records. I'd appreciate any responses. Thanks, Don