Yep, we have the Dexter axles.
My main complaint in greasing the wheels was getting a good point to raise the trailer. The rig has a "floating" tandem axle that pivots in between the wheels making them move semi-independently. The rig also has the axles flipped making it dammed high. My new work-around for this is to use some 4 inch long 4x4s with a 4x4 underneath as a lifting point. I lagged bolted the 4x4's together into a U-shaped form that lifts the leaf springs at each wheel without putting pressure on the tubular axle.
Sorry I don't have an area I am willing to post a photo on that is accessible to everyone. If you want a photo PM me an I will email it to you.
Thanks
Bill