Optional S/PDIF digital input for APL Denon 3910


Dear Audiogoners,
I am a quite happy owner of APL modified Denon 3910.
Currently I am in the process of transferring my whole music collection to a music server in FLAC format.
In the chain of equipment I would need good quality DAC. The thought occurred to me that instead of purchasing new DAC, I should be able to install optional S/PDIF Coaxial Digital input allowing for connection of digital sources to my Denon (this option was offered by Alex after I modified my player).
Currently Alex is nowhere to be found (probably he is enjoying his stay in Bulgaria, who knows ;-) , so I am on my own.
My question to you is: do you know any good technician preferably in San Francisco area who would be able to add this type of input into my player?
Your answers and help will be greatly appreciated.
Thank you in advance
Lucian
meta
I have to disagree with you guys. NO question that Alex is a genius, but I would be completely shocked if one of the other well known mod companys could not make repairs and upgrades to the APL players. If Alex has been mia for most of 2008, all of us who have invested serious cash in APL players need a Plan B.

I have never spoken with these 2 companies below, but maybe someone can call these guys and ask if they would be interested in working on APL units. I have read the horror stories of the guys with broken NWO3.0's and they need help ASAP.

http://www.referenceaudiomods.com/

http://upgradecompany.com/
OK, great ideas from Billbench and Tvad. Will report back after I try contacting them this week.
Swampwalker, please do report back. I am one of those stuck with an NWO that is not functioning properly.

I do think Alex will return or let us know where to get our units repaired, but when is the question. He has been gone since May or June (can't remember) and refuses to reply to emails. And everyone knows his CSM quit.

Not great business practices for someone who wants to release a new product soon.