I have been out of town without internet service for a week. While on our trip in our Grandstar 3750 we hit down hard enought to flaten the exhaust pipe for our generator. Newmar engineers ran the exhaust pipe under the frame support for the generator, which hangs low anyway, as the op posted. This is 3 times this has happened and it doesn't take much of a curb

. I will be changing the exhaust to run out the back of the motorhome insted of under the generator. Newmar should know better then rig something stupid like that

. I'll be taking pictures of it and try to post them, also will be calling Newmar..
Bill