Axle Rating on a 2008 3912 model

What is the axle rating on the new 2008 3912? The rating posted online for the axles only totals to about 15,500 lbs but the GVWR is 18,000 lbs. Obviously this doesn't make sense. Can someone please clarify this? Also, the height online for the 3912 is listed at 12'9 with the a/c yet we measured it and it was actually about 13'9 with the a/c. Is that a typo? The trailer is wonderful - it has everything you could ever want in it (I just wish there was someway a door/screen could have been put in between the master bedroom and the stairs). You all did a fantastic job and we're so happy to be Cyclone owners. Thanks for your help.

The axles are right. You have to figure the Tow vehicle axles also into the 18000lbs The 15,500 lbs is the axles rating and than you have a hitch weight.