Got a model number? Is this a yanmar tractor, or what? Need a bit more to go on, but might have a source or two.
Not all spindles are created equal - bought a set to rebuild the crappy deck on my Cub RZT50 last year, ended up with Oregon brand stuff. Built probably half again as well as original.
Please post make, model and anything else (maybe a pic or two of spindles), and I'll give it another shot... Steve
Oh, and if you know who REALLY built your rig for whoever put their name on it, include that -