Dump bed mechanical linkage won't work

My dump head on my grapple truck doesn't work properly now I had a gas can in between the frame and the dump bed and the dump beds sat down on top of the gas can and squished a gas can but as you can see in a picture it squished a gas can on top of the linkage line that makes the dump go up-and-down or you call it the mechanical line or cable Or linkage any way I can tell when I'm in a cab using the lever that goes up-and-down for the dump bed it doesn't feel right I have to push it super hard forward to make it come down. And it comes down super slow now. It was Never like this before until the gas can smash down the linkage. How can I fix this problem

 

Kranky.
I disconnected cable and once I did that I could see it moved freely back and forth . Then I thought maybe it is ok but then once it was hooked back up I could get it to come up but it too 5 minutes to come down. It was super slow. Do you think the valve the cable goes into somehow got damaged or bent also?