My Tractor

Okay, I've got this old tractor that I have been working on. Dont really want to work on it, but if it is going to run, you got to spend some time(and $$) on keeping it up and going. So anyway, I tore up the power steering cylinders and ordered some news ones. The guy at the part shop is about 200 years old and knew what I wanted and needed before I wolked into the store (you know the type). He ordered them and poof they appeared within a week. I was so happy and excited, my tractor was soon to be up and running again. I get the shiny new cylinders home and begin to put them on...oh no...there is a problem...they dont fit...crap..darn..&^%(()5%^!!!!! So off to the tractor shop again maybe this time the old man will listen to me and get the right parts.