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I searched around the forums but I didn’t see info relating to my my direct questions.
I’m doing some winter tinkering and got to the swing arm.
The chain/axle adjusters in the box section - they’re very tight in their cavities. I can understand some drag in movement but these are really tight.
If I thread in the long bolt and grab it with my hand I can’t get it to budge.
Before I take a hammer to things: is this typical?
Should I leave them alone?
If I should take them out, do I clean/file/work them until they slide to and fro with some slight drag? It makes sense to leave alone the faces that take axle tension. And what does the circled bolt do? To limit the travel of the adjustment bolt?
I’m struggling to understand it’s purpose.
Thanks all.

They should slide reasonably freely , like you should be able to move it with a bolt as you describe. Might be dirt , might also be that someone has got a bit ham fisted and damaged the edges of the slot ......maybe dress it up with a wire brush ( dirt ) or a file for flattening off dings . If someone has either not used a washer or the wrong one (over?)torquing up the axle could damage edges of slot.

Thanks for the insight MC, I got them out tonight. Some spacers and washers, then hammer and drift got them out. There aren’t any burrs turned up or significant dirt; the extrusion sides just an interference fit to the slides. They will go in maybe a half inch freely, then tighten up.
I’m going to take the adjusters to work and skim the sides with an end mill. Shave like .003”-.005” off each side.
Neither adjuster had the bolt #33 shown above. Nor were the holes tapped, just a smooth bore. Chalk it up to another Ducati mystery.
I see that sometime in its history someone flipped the tapered wheel washer. It was oriented correctly when taken apart. Could be better, not as bad as some.

I wouldnt trim the extrusions ,I think its far more likely that the sides of the tubing have been "moved " inwards and trimming the extrusion will only make this deformation worse . Maybe someone torqued up the axle without the extrusions fitted , I have seen worse happen after a big day . If they are still stiff after a good clean and dress up ....Id live with it , taking metal off isnt the answer

I'm with Hamish. I wouldn't modify that part. I wonder if the reverse installed conical spacer could have dented the swingarm.

I haven’t shaved them yet. I guess I’ll scratch that idea if you guys think that’s not a good path.
Both sides have the same amount of stiffness it seems to me so I don’t think a reversed conical spacer is the root of it for the sprocket side.
Nevertheless, I’ll know I’ll have to give the wheel some extra “umph” when I need to move it forward for a tire change.

I guess its just one of them things you sometimes discover when you buy a used vehicle .......no control over its past owners actions. Bit of a pita but with a good o ring chain you wont be doing much adjusting .
I met the previous owner of my Paso at a bike rally . He expressed surprise to see it so far from home ( as he put it ) as he had sold it because of the usual deteriorating wiring issues, and the fact that no one , inc the local Ducati mechanic ,could correctly diagnose and fix .
Me fix though .......heh heh heh that fixed the sawn off little smart arse..........come over and start telling me my 1st Ducati was a pile of shit.