Vintage Synth Repair

Hello,

I am in the D.C. area and would like to have my Arp 2600 serviced.  
Currently, the VCF does not work.  I have asked around and everybody 
has says Phil Chircco at CMS is the best, but, After 2 months of 
trying to contact him via email and telephone with no reply, I have 
given up.  Does anybody know of a person who can service an Arp 2600 
in Baltimore, D.C, or Northern Virginia?

Thanks,

Ethan