Cat d5n is becoming a head ache..lol

Cat d5n agg00655 Operators I say this lightly because no one done it they never do ...own up to breaking something and how it happened My shops first call hose busted replaced hose and needs replacing ... replaced busted hose noticed tilt was limited and angle to left was good but not half to the right it would stop farther looking rod on right cylinder was bent and not allow it to move back ... Cylinder was removed and taken apart rod bent rod end split and barrel scarred ( I call rod end the screw in head on barrel with dust wiper and seals for rod) Replaced with a good used complete cylinder everything worked fine but not been on a job site to really work it .. Got a call from job site nothing on blade works unless operator shakes control and sometimes it works and not All 3 functions stop and doesn't stress engine …..now its at shop My question is ? ive had problems with blade up and it would drop slow 2 inches then go up that was solved with cats top tech help with compensator valve adjustment now its a big headache Could my problem be pump slow failure on signal side compersator valve controls it but what is inside of pump to react to that Every pump pressure test I read says 5 secs for top blade load and bottom down blade load and left right angle and tilt could they have over stressed the pump and caused this problem trying to make blade work when rod was bent on angle