From my perspective, the alignment is off.
The pulleys are definitely out of alignment in the vertical plane, and may be out in the horizontal plane as well.
A photo from the bottom of the assembly would be helpful, as would a drive side shot of the area.
Was dropout replaced?
Did the bicycle fall over on the drive side?
Was the derailleur removed ?
Potential exists to cross thread it into the dropout( alloy is pretty soft material, relative to the derailleur bolt)
Is the derailleur hanger original? I ask because , from the photo the mounting appears to be a bit wonky.
The derailleur does not seem to be square to the hanger(note the slight gap of the derailleur at the bottom of hanger
and the angle of the derailleur stop on the hanger itself which is off center),
While there is really no replacement for the correct tool(Dropout alignment tool), a simple and gentle
"cold set/ BEND" toward the wheel of the bottom of the pulley assembly would be a bandaid fix.
Good luck.
rusty
Last edited by 100bikes; 03-23-20 at 03:50 AM.