alignment

First of all thanks to all of you that have replied, I do appreciate it!!! I did not want to add all of the specifics before to try to keep it short and simple. But anyway, as donn0128 wrote :either the way I tow, do you mean do I curb jump? No I am very careful about going over curbs. I mean I don't go over them. I even take wider turns so that I don't stress the axles as much. Advice was from alignment shop. Also I have had my rig weighed at a CAT scale on the interstate and the results were: steer axle 4520 lb; drive axle 5360 lb; trailer axle 8120 lb; total weight 18000 lb. Now my GVWR 11800; my GAWR (each axle 5080 LB); I also had just my truck weighed with a the same things inside it and the truck bed which of course includes the hitch and that weight was 8790. We also weighed all the the contents we put in the coach, food, clothes, dishes, etc. plus under storage things and that weighed 1670 lbs. Now the weight at the CAT scale did include all the contents that I just mentioned. The sticker on the side of the RV says never to put more than 2950 Lbs of cargo inside the RV. Now I have read on some of these forums not to go right up to the limit with weights and I have held that true to my belief as well. So according to my calculations we are close to 1300 lbs below the recommendations. I also do not drive over 60 mph and when I come up to a railroad track I slow way down because you just don't know how good some of those crossings are. If there are any other questions I have not addressed please ask again. I really do appreciate everyone of you who take time to help people like me. Thanks again everyone!!!
Bill