Greg et al,
Just an update on my situation with the B&W companion RV (5th wheel) hitch. Not everyone who has used this hitch has experienced the bucking and surging problems we did. I've been communicating via e-mail with Mr. Joe Works, the President of B&W about my problem. I took some digital photos of my installation, and Mr. Works is concerned that there may have been a manufacturing error in my hitch that's causing the problem.
At any rate, he shipped us a complete new hitch assembly (the turnoverball gooseneck and the companion RV hitch) - it arrived at the house yesterday afternoon. He wants us to pull our old hitch out, install the new and ship the old one back to B&W for inspection. I'm going to try to get them changed out this weekend, so maybe I'll have some news soon on whether or not our problem has been solved.
I certainly don't have any complaints to date about B&W's efforts to correct the situation. To be fair to them, they have a lot of other satisfied users who apparently haven't had this problem, so I certainly am not suggesting that anyone not purchase their product.
Rusty