I have a Teraflex HD for my 35's and I've detailed the hinge issues I'm having. I haven't had time to completely remove the entire rack and tailgate to break down the hinges and pull the pins (pretty sure it's galvanic or bimetallic corrosion on a 4-year old part), but Teraflex has not returned any of me emails and their phone number is always "all circuits are busy at this time."
I'll give them one more opportunity, then it's time for some very negative reviews and recommendations. It's a $700 rack with the adjustable tire mount and there's no way it should have gone south this fast.