I worked the axel swap into a vacation and had Scamp replace the axel on my 13. They do weld the axel to the frame. No muss, no fuss, in and out in just over a couple hours. No research, no ordering, no shipping, no issues. Just enough time to go across the street and get a good meal then tour the factory. They scheduled two axel swaps a day at the time mine was swapped. Just make sure you make an appointment. If you decide to add brakes
or change bolt patterns then you will have those issues to deal with. I highly recommend using Scamp do the swap if you want no headaches. If you block your trailer up during storage as they will suggest the new axel should last over another 20 years.