Thanks for the info. The TT came with Lippert 3,500 lb axles but when I look at etrailer.com it looks like they only sell Dexter and they aren't "plug and play" so I wouldn't be able to just unbolt one and put the new one on. I did look at the website for Johnson Surplus and see they do carry the Lippert. Someone mentioned them, does anyone had experience with them? Honestly it almost seems too cheap compared to the Dexter or am I comparing apples to oranges?
On both the Dexter and Lippert that I've found, they all look like they mount above the leaf springs but on my current setup they are below the leaf spring. Other than lowering the trailer a few inches, any other advantages or disadvantages to going with a setup that has the axle above the leaf spring? Thinking that as long as I am doing the work it might be work replacing everything.
Also, if I replace both axles, how do I know I have them aligned currently? Doing a little reading it looks like they are supposed to be within something like 1/16th of an inch for the alignment. How can I do that at home?
I appreciate all the advice. I really want to do this myself because of the cost but need to be comfortable with it.
Thanks.