diesel, the biggest problem I see is the front is down too low, the hydraulics should suspend the front of the hitch as well as the back of the mower, if you are going into the far forward/float position on your lift/lower lever, you are going to have the droop in your hitch where it attaches to the tractor - now in bakers picture, if you turn the adjustment where more bolt is showing/lengthen the throw of the adjustment bolt, your wheels will touch the ground sooner thus raising the rear of the mower higher, you should be able to adjust that as needed - you also should be able to lower your mower wings to a specific height and even run with them up in the air if needed to mow valleys so as you drop the mower wings down, there should be no reason they will be dragging all the time, my skis on the wings only hit the ground when I go over a rise/dip in the ground, they are not meant to RIDE on the ground all the time, if your hydraulics are not holding the wings up and your hitch at the tractor is not raised up where the tongue is level, something is horribly wrong or you are either dropping it down too far manually or hitting the float position on your hydraulic lever.
adjust/lower, adjust raise, suspend wings, - most tractors use a split line/T for the two wing cylinders - one side will lower before the other so just keep holding the lever, it will catch up - like I said play with it, you will get the hang of it, these smaller tractors don't have the high volume pumps in them like the LARGE 100+ HP tractors, my 150hp tractor will flap the wings up on a bat wing like a bird but my smaller tractors are one at a time..........be patient and play with it, oh and raise it up/down, oh yea did I mention, practice going up/down until you get the hang of what it looks like to get the hitch level and wings suspended? ;-) very simple mechanics here not rocket science - and yes those cylinder stops might help on the wings IF you don't want to manage them by hand - let us know how it goes