I had a 1999 24T that set very low. After hitting and breaking the awing support and the sewer connection, I raised the camper 3" using 2X3 tubing between the frame and the torsion axles. This is the same size tubing the 2499T has as a frame. I welded a flat plate to the 2X3s, I purchased for the lift and drilled holes matching the holes for the axles, 2 in the plate and two in the tubing. I unbolted one side of one axle at a time, bolted in the tubing and then bolted on the axle. Was able to have the parts welded in a shop and painted before installing. Completed the work in my yard in one afternoon.
The camper towed better and extra 3" gave me lots of clearance and gave me more height for sewer drainage.