Crooked trailer

Have you ever connected with a trailer and you notice that your even when you driver's side steer is consistently over the zipper line the rear passenger tandems are still hitting the rumble strips?(This is a slight exaggeration, but not much)

So this is the second trailer ive noticed(badly) like this in the last 2 weeks.
This appears both loaded and unloaded. Tire pressure is not the issue. The only other thing I could think of was tractor air bags leaking on passenger side.. And that doesnt appear to be the case either, unless they are holding different amounts of air on each side?????? I also noticed when docked prior to loading that the passenger side seemed higher against the dock and slanted down a bit towards the driver's side. Noticed this before loading began(43,000lb load) and still appeared the exact same after loading.

Now coming down the road MTY is very easy to stay within the lines at all times, but it does take extra attention and work.... Loaded, however is ten times worse she's leaning constantly in the back there. Parking and docking too, require adjustments to be as straight as normal. Looking at my tractor/trailer head on you can see definitely see something somewhere isnt right.... Maybe its the tractor itself?

Anyone have any ideas?

 

Company has very excellently maintained equipment, trailer's are fairly newer... Only 15-20 trucks.. Maybe 25-40 trailers.... Going to try your idea in the daylight...

 

Sure man, everything helps at this point! Good info! Thank you