Has anyone else noticed the decrease in towing capacity for the 2500HD? It appears to have gone from 16,100 to 15,800. I have a 16k 5th wheel and have been waiting to order a new 2500HD Duramax but I have some doubts. I guess I could always do the 3500 SRW but I wanted the short bed which is not available in the 3500. Any thoughts?