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That's exactly what I was going to try next because I was wondering the same thing

General update. Again, thanks for all the ideas and suggestions. What a great community to be a part of. I feel like the whole group is invested in helping solve me problem which is pretty cool. Not a single snarky or rude comment which isn't normal when asking questions online. I leveled the...

I think your graphics are good! I think I'm going to plumb them in parallel before I try ratchet jacks. We'll see.

The center cylinder seems to extend and retract the entire way. I will plumb them in parallel if I have to.

The wing cylinders are smaller diameter than the center cylinder, but appear to be the same size. The first two cylinders in series (center and right wing) seem to phased correctly now, just the last cylinder (left wing) is still off.

Found in the manual the rephrasing procedure. Your are correct it is extending, but doesn't seem to make a difference. I think it's definitely the issue though because I can't get wing cylinders to fully retract. It's making me wonder if there is a blocked passage or something.

Found in the manual that rephrasing is done by fully extending by up to a minute. Tries that and still no difference. Starting to wonder if a passage is plugged or something

You are correct. I will make the exactly even before if do any mowing. I think I've pinpointed the bigger issue to phasing the lift cylinders.

Makes a ton of sense. I've been looking up rephrasing, and I have a few things to try. Thanks for the help, I'll let you know how it goes.

Not sure how much you can see from the pictures. The cylinders to list the wings are as simple as can be. One line from the tractor to lift each wing (retract the cylinder). No return, gravity down (extend the cylinder). Each on their own remote. The lift/phasing cylinders are a bit more...

Just picked it up at an auction, so I don't know much history on it. I did have to replace one of the gearboxes. I'll get some pictures of the house routing in a few minutes

I'll get some pictures when I hook it back up to the tractor this afternoon or tomorrow. Thanks for the help!

The deck lift cylinders are definitely double acting but the wing lift are plumbed up to be single acting. Looks like there are ports on the opposite side of the cylinder that might make them double acting but they are plugged off - and this matches the way the manual shows it. Its a 6415 and...

I did even the ratchets back out. It's a JD 6415 and I believe it's an open center setup. It's seems like airlock on the lift cylinders might be doing it. I had to use the tractor for someone else today, but tomorrow I'll him it back up and see if I can bleed them.

After looking at it a little more, it appears the "phasing cylinders" for the wings aren't retracting all the way so they are different lengths than the cylinder in the center. Not quite sure how to make them all matched. I would assume that if one bottoms out the others should still retract...

The hydraulics seem to work like they should, the wings and deck go to and down the way I would expect, even with the splitter

They don't seem to retract any further. I might have to try to swap some hoses around

I assumed they were original, but I'm not sure. I guess I could unpin the cylinders and see if it settles all they way down

Thanks for taking the time to answer. I've responded to things in the same order as your suggestions. I really appreciate it! I have a copy of the manual. Out curiosity, what work do you see that it needs? Hoses appear to be connected correctly. The way it's set up right now is there are...

I can't figure out how to get the wings leveled on my Modern Ag 15' Predator. The manual says to loosen the ratchets but that doesn't seem to do anything except make the linkage loose. What am I missing. Hard to tell from the pictures but the outside skid of the wings are about 8" of the ground...