Don't know but I will find out what exactly it was done and I guess how much to upgrade to the 5 k one. We shall see as I can not imagine it being that much if that one is not a 5K one as when I had the work done before the axle was only like $150 bucks or so.
Thinking about adding another trailer anyway so if the cost of putting another axle on this then this may just get used as the new trailer . We shall see.
Thanks for the legwork.