Super tweeter repair

Hello! everyone!
is Anybody out here who can help me find a place where I can take my Townshend super tweeter for repair? it is making a high pitch sound when connected. I'm from Canada.

I brought it to Vancouver Speaker Clinic They tested it and said there is nothing wrong with it..I wonder what causes the High pitch sound.
I suggest that you bring it to Margan's Audio in Richmond.. See what he says..