After I purchased three Go Flight Modules from their Canadian Distributor Aviation World here at CYYZ, they worked well for about 6 months. Then the Autopilot module GF MCP started to breakdown. The vertical speed dial would not dial the correct VS rates. It would jump all over the place. After many emails with one John at GF, who was very helpful in sending me test files to see where the problem lay, we finally figured that this unit was defective and needed replacement or repair. Just as this was decided, John vanished from GF. No answer ever again. Finally after months, another guy Vince took over. He never did follow up on Johns work here. Then after 3 emails to this Victor, I get an email saying he is out of office until mid August.
GF Modules is obviously in financial trouble and cannot honor their warranties or service of these complex units.
Be warrned about GF Modules and their ability to stay afloat!!!