Who uses dual tilt cylinders? I do...

[MtnViewRanch]

Just curious...do any model tractors come with manually adjustable side links on both lift arms?

Yes. Typically they are full size utility machines though. Some are like the red tractor and you can easily adjust either side.

Some are like the orange tractor where the left link is adjustable, but really is not intended to be adjusted short term.

There are several smaller more deluxe machines that have this left link capability, JD comes to mind.