As someone who has a couple mics I'm looking to have modded or upgraded, I can say after reading this and other threads that I will absolutely NOT be sending them to Tony at SPA.
I'm sorry, but it doesn't matter what kind of quality work someone does, or how long it takes for them to do it, there is simply no excuse in this day and age of instant communication to not be able to fire off a 30 second email to someone who has entrusted you with their gear worth thousands of dollars to simply keep them apprised of their status. If you want to take months trying mods out or whatever you want to do, great, just keep the client in the loop, or at the very least don't ignore their repeated calls or emails.
It's amazing to me how some folks never seem to learn how just a little bit of communication goes such a long way to maintaining client satisfaction, even if things take much longer than anticipated.
In any case, I'm sure I'll be getting in touch with either Jim or Klaus...