Need help with a strange trailer problem

[montanaman]

Before you sell it, load a single tractor on it, a little further forward of where you would normally tie it down and go for a ride. Then move the tractor one inch backwards, go again, and keep doing this until you find the sweetest ride you can get out of it. There is a point at which the tongue will get light, so be careful with that.
I am reasonably sure you will find one point that rides a lot better than most of the rest. Since they build trailers pretty much the same way for the same model, and nobody else is having trouble with them, maybe they got lucky with the loading.
What can it hurt to waste a few gallons of fuel and half a day?
What you are discribing is hard to get out of a trailer that is loaded with the belly full (center loaded). Even tractor trailers have some problem with it.
David from jax

Thanks Dave,

I've had it loaded just about every way that you can and it seems the more weight I put on it, the better it is.

It seems it is just as bad empty some times as it is fully loaded.

I even thought it could be an alignment problem but wouldn't know who to take it to around here to check that out.

Ken