Cat 416 c linkage problems

Hello everybody. I recently purchased a used 2000 Cat 416c and I am having some issues with it. The backhoe scoop linkage arms broke and the H linkage bent. I replaced the arms and had the H link pressed straight and welded. I also replaced all the pins and bushings. Greased them up and within a hour the arms literally popped off both sides. See attached photos. No signs of anything binding and all looks straight. Any help would be appreciated! Please ask for anymore details or photos....

Cat 416 c linkage problems

Cat 416 c linkage problems