Maggie 1.6 noise

Good morning.  I've been wrestling with noise coming from the right channel of my stereo.  When the needle hits the record it almost sounds like a rock-tumbler (but much quieter).  Started trying to isolate the source including replacing the cartridge (different story).  After switching tubes, amps, turntables (same problem), sources (pretty quiet when streaming), I happened to move the right Maggie a little without music playing and there was the sound.  This time it was more of a rattle seemingly from the top left (non-treble) side of the speaker.  Dealer wants about $500 just to open the bad boy up!  They are at least 15 years old.  Have moved a few times (always boxed).  The question is . . . repairable?  Is it worth it with what appears to be a lot of well reviewed speakers on the market?  I have an Audio Research vi 55 integrated.  I play a lot of records on a VPI Scout (Karat cartridge).  THANKS IN ADVANCE for your consideration.