camp104,
There are numerous places to get your coach weighed. Refuse disposal companies have scales, moving/van and storage companies have scales, your local dump most likely has scales. A few phone calls will yield some results for you. And, while four corner weighing is somewhat important to try and help you equally load your rig, to me, weighing the axles is more important so that you can properly determine your appropriate tire pressure. This is just an opinion so, take it for what it's worth.
Scott