I have a new Winnebago Micro Minnie and the toilet seat makes a lot of cracking sounds when you set on it, anyone had this problem and is there a solution.
My first response is "are you sure it's the toilet seat making all the noise?" :)
You might check the hinges and see if they are weak or failing. Also, if it's not a solid hard plastic seat, it might be soft plastic covered cardboard - which is very cheap and will lose it's integrity quickly with little weight put on it? If so, switch it out with a more expensive wood-based seat.