B2601 loader cylinder denting frame

[GSD-Keegan]

I have B1673 on mine as well….and mine has a curve in the framework between the two pins.

 

[tinkerwitheverything]

Yup there's a difference . Looks like your problem is due to wrong quick attach frame. Armed with what you now know go to your dealer and let them know what you've figured out and see if they will help you out.
Btw yes that stop was to do with the dumping of the bucket. My bad.