Hi,
Here is an update from the OP:
I was able to locate some 5200 lb. front coil springs for a reasonable price so I removed the 6000 lb. plow package springs. This resulted in a slightly better unloaded ride but nothing significant. I just returned a camping weekend and I would say that the new front springs had the effect of making the "chucking" just slightly less severe. The "chucking" was still very much present but the amplitude or severity of the "push-pull" feeling was a little less. Unfortunately it will need to get a lot better or I will have to look into a new trailer and/or truck combo. I am planning on finding someone local to pull my 5th wheel just to see if they also experience the issue when using a different tow vehicle.
Again thanks for all of your suggestions and please post anymore ideas about this issue.
