Deck or frame bent

I had a brand new 53 flat that done the same thing but, it worked itself out eventually......

 

Nothing to see, roll with it. You remind me of me…… now that I’m a lot older, i don’t let the little stuff bother me. I just roll with it.

 

Looks like its lost a bit of the arch on the left side.

 

Looks like you lost some arch on the left. Just load heavier on the right for a bit.

 

The only equipment I won't haul on my stepdeck is asphalt paving machines.
If the equipment wheels or track fit on the deck. I feel it's good.

Your trailer looks ok. I wouldn't be concerned about the deck as long as the beams are ok.

 

Was this a new trailer? Warranty? I don’t think I would call insurance over it personally. But I like the thought of taking it for an alignment check.

 

I see what you are talking about. It's been a long time since I hauled flat bed, and I can't remember what I did yesterday. With that said, I don't think you overloaded the trailer. Have you looked under the trailer for any damage? If your concerned about reloading the trailer, have a trailer shop check it out. But I personally would run it.

 

Chances are the slight stretch of your left hand outside rail will relax over time if you do not strain it the same way and in the same place.
Just to let you know this is most likely caused by putting the heavy end over the weakest point of your outside rail, the area between the spread where there are no angle braces to the main frame and it looks like you managed to put the wheel holding that counterweight between crossmembers and probably a bit off centered to the drivers side. Two inches sideways on your deck can move 1000 pounds from one rail to the other if there is about 25k on that axle.
Backing the load on so that the heavy end is at the front where you have angle bracing will help to stop this from happening in the future and putting a plank lengthwise under any wheels over the weak area to spread the load out will help. A 4ft hardwood 2X6 is all that is needed. store it on top of the toolbox on each side.
Do not put a insurance claim in for this as it most likely will not be paid out and will put you on their radar.