I just replaced my axle
in my 13' Burro
3 weeks ago. I replaced my old axle
with a Flexiride axle
from Southwest Wheel. I worked with Tracy Roberts <email@example.com>. She helped me get all the measurements I would need and walked me through the whole process. When I replaced my axle I also added a 2-5/8" lift to my Burro
Southwest Wheel took about 2 days to build my axle to my specifications and then FedEx'd it to me. From order to my doorstep took about a week.
It took about a day to install the axle since we had to weld the lift bracket in place before installing the axle.