I purchased a Saris bike rack(www.saris.com), the Thelma model. While reading the instruction/owners manual the following statement was posted under the heading "Caution", "This rack is not suitable for use on any type of trailer or recreational vehicle." I have a 2" receiver on my Big Horn and there is not issue with properly and securely mounting the bike rack onto the BH. Would anyone have an idea why this statement is provided by the manufacturer? Is it a type of "CMA" statement? I have contacted Saris, but have not heard back from them.