Hi Lynn,
To put any concern to rest, the PC supplied 6-ton jack works well. My PC-supplied 6 ton jack works great with my 2350 which is about the same weight and size as your 2400. I used the jack twice lifting the right rear corner axle for getting my Lynx leveling block wheel chock out of a jamb. Somehow if conditions are just right when rolling off the Lynx blocks, the Lynx wheel chock flips up and gets stuck in between the blocks and tail pipe. I really should make it a habit to move the rig just enough for Irene to get that chock out of there....then roll off the Lynx blocks.
Ron Dittmer