My Eby trailers all have the axles bolted to the trailer since steel is not welded to aluminium. I recently talked to the factory about raising my 16' stock trailer since it is rather tight. I am planning on doing the job myself since it doesn't seem like a big job it will just take time. They told me to use thick wall box channel for spacing 2x2, 3x3 or 4x4 if needed. My 20' and 28' have a taller neck and there is not an interference problem.
John
