I have a 2006 521VX with the trailer to match. I am the original owner. I love my boat, but hate my trailer and have had nothing but problems with it since the axle bracket failed backing into my driveway. Ranger replaced both my axles, my friends and I did the install. Since then all I have is hubs that fail. Even lost the whole wheel assembly and brake on my way to a tournament one morning. Went through the oil bath hubs, then the grease hubs, and two years ago after one of those failed I went to the Vortex sealed hubs. Changed out all four of them. I thought I solved the problem. Until I decided to rotate my wheels Saturday and sure enough one of the wheels is wobbly. I did not feel any vibration when I was towing, and constantly check my wheels for heat when I get to my destination or when I arrive home. So I ordered another hub from Ranger this morning. Even the person who took my order said you have ordered a lot of hubs in the past. I purchased a spare one two years ago so I will be installing that one tomorrow. These are supposed to warranted for six years or 100,000 miles. So I called Tie Down Engineering this morning and found out they sold that part of the company to Dexter Marine products. I called them and I am waiting for them to get back to me. In the meantime if anyone has any suggestions about what I can do to solve my problem with my trailer. Short of ordering a new trailer, I would appreciate it. Thanks, eagle521