New 5th wheel doesn't tow well

IBcarguy wrote:
When weighing, it will let me know the total weight of the trailer, but how do I determine pin weight? Do they have a method to weigh just at the pin?

Look up how to weigh RV on CAT Scales. There is a Youtube video or two out on how to do it, and several good webpages. You pull on the scale so that the front truck wheels are on one scale, back truck wheels on scale 2, and the trailer axles on scale 3. Get the weight, then weigh again with the truck only. By seeing how much extra weight is being carried by the truck with the trailer hooked up you'll know what the pin weight is. In your case with the Andersen adapter your front truck wheels will probably a few pounds lighter with the trailer hooked up because the hitch carries the weight slightly behind the rear axle.